Virtual Box

Licence: Other Open Source
Version 4.2.18 | Release Date: 2013-09-06 | Download
VMM: properly handle NMIs on Linux hosts with X2APIC enabled VMM: fixed potential crashes with 64-bit guests on 32-bit hosts (bug #11979) GUI / seamless: properly handle mouse wheel scroll events GUI, VBoxManage: when unregistering a VM, also unregister the hard disk images which are used exclusively (bug #10311) GUI: prevent crashes under certain conditions on X11 hosts 3D: multiscreen fixes (incorrect mouse position, flickers) 3D Support: several fixes for the Windows WDDM video driver (multiscreen, seamless) Snapshots: made live snapshots work again (bug #9255) Teleportation: made it work again (bug #9455) VBoxManage: on snapshot take, --pause is default and --live is for doing live snapshots VBoxSVC: don't crash on systems with many VLAN interfaces (Solaris hosts only) Network: after the host resumes from suspend, disconnect and reconnect the virtual network cables to force renewing the DHCP leases for the guests. So far only Mac OS X hosts and Windows hosts (bug #10063). NAT: on name server changes force a reconnect of the virtual network cable to notify the guest (Mac OS X hosts only) Mac OS X installer: keep previously installed Extension Packs on VirtualBox upgrade Linux hosts / guests: Linux 3.11 fixes (bug #12001) Solaris hosts: fixed a potential kernel panic caused due to unexpected preemption due to logging. Windows hosts: fixed an issue with USB2 devices being inaccessible when plugged into USB3 ports. Linux Additions: added PCI device identifier to vboxvideo.ko fixing DRI initialization under certain conditions (bug #11957) Linux Additions: fixed udev detection in the init script with Linux 3.x kernels
Version 4.2.6 | Release Date: 2012-12-19 | Download

VirtualBox 4.2.6 (released 2012-12-19)

This is a maintenance release. The following items were fixed and/or added:

VMM: don't inject stale VT-x events to prevent crashes after VM reset (bug #11256)
VMM: workaround for buggy BIOSes which enable MONITOR only for certain CPUs (bugs #9460, #10686)
GUI: fixed trimming of anti-aliased text in details-view element headers (4.2.0 regression)
GUI: fixed create-settings-file-alias functionality on Mac hosts (4.2.0 regression)
GUI: fixed take-guest-screenshot functionality on Windows hosts (bug #11095)
GUI: several minor fixes, including palette fixes (bug #11191)
GUI: fixed Windows 2012 OS type (bug #11206)
GUI: allow to terminate the VM even if VBoxSVC crashed
API: fixed cancelling of snapshots, previously this could lead to inconsistent VM configs (bug #6877)
API: fixed identifying disk images by UUID (bug #11209)
3D Support: several fixes
VRDP: fixed occasional crash with external authentication (bug #11156)
VGA: fix for double scan text modes
USB: fixed invalid pending request count at the time of service of DEVICE POWER requests (Windows hosts only; bugs #10021, #11056)
USB keyboard: Korean keyboard workaround (bug #11150)
Storage: fixed hang with QCOW images and asynchronous I/O enabled
Storage: fixed hang with newer VHD images (bug #11279)
Storage: actually write the non-rotational flag to the VM settings (4.2.0 regression)
Virtio-net: fixed the problem with network statistics counters in Session Information dialog (GUI)
Metrics: introduced network rate and disk usage metrics
Metrics: fixed a crash under certain conditions on Solaris hosts
BIOS: fix for El Torito
Shared Folders: if the host folder of a shared folder mapping does not exist, keep it active but mark it as invalid to prevent inconsitent saved states (bug #11147)
VBoxManage: fixed converting disks from raw images
VBoxManage: show snapshot description in the VM or snapshot information
VBoxManage: make implicit opening of media consistent in all places dealing with media
VBoxManage: the iSCSI initiator name was not stored in the settings file when doing storageattach (bug #11212)
VBoxManage: metrics collect now properly handles 'CPU/MHz' and 'Net/*/LinkSpeed' metrics
VBoxManage: changing the image UUID or parent UUID as part of storageattach works now in all safe cases
VBoxManage: introduced storageattach --medium additions as a shortcut to mount the additions image (bug #11165)
OVF: fixed importing OVF files cerated by recent VMware products (bug #10905)
Linux hosts / Bridged Networking: fixed the problem with leaking connections in conntrack (bug #11178)
Linux Additions: added support for ConsoleKit sessions in the vminfo service of VBoxService
Linux Additions: don't crash during remount under certain conditions (bug #11291)
Linux/Solaris Additions: fixed guest memory metrics collection
Solaris hosts: added a dependency to ensure that the user directories are reachable when starting VBox services
Windows host installer: integrated user-contributed translations, thanks to all contributors!
Windows Additions: fixed auto-logon installation for Windows 8
Windows Additions: don't fail if the shared folders host service is not available
Windows Additions: fixed Guest Additions startup on Windows 2000 guests (bug #11253)
Windows Additions: auto-resize fixes for Windows 8 guests

Version 4.1.18 | Release Date: 2012-06-20 | Download
No changes specified
Version 4.1.15 | Release Date: 2012-04-26 | Download

(https://www.virtualbox.org/wiki/Changelog)

This is a maintenance release. The following items were fixed and/or added:

Network: fixed the problem with packets larger than MTU-4 when PCnet or PRO/1000 was bridged to certain types of adapters on OS X hosts (bug #3783)
NAT: fixed a segfault under rare circumstances
3D Support: fixed Windows WDDM video driver crash for SMP guests (bugs #10200, #10331)
Windows Guest Additions, VRDP: fixed occasional text corruption (bug #3001)

Version 4.1.12 | Release Date: 2012-04-02 | Download

This is a maintenance release. The following items were fixed and/or added:

VMM: fixed VERR_NOT_SUPPORTED and VERR_RAW_MODE_INVALID_SMP guru meditation due to an invalid reschedule to raw mode (bug #10370)
VMM: fixed PDMCritSectLeave guru meditation under rare circumstances with SMP guests
VMM: proper Math Fault handling with certain legacy guests (bug #9042)
NAT: fixed a socket leak under certain conditions
Storage: better sanity check against reading beyond end-of-file
Audio: fixed a crash in the NUL audio backend (bug #10374; 4.1.10 regression)
HGCM: fixed a crash during savestate under rare circumstances
VBoxSVC: several locking fixes
VBoxManage: return the correct error code if controlvm savestate failed (bug #10134)
Guest Additions: VBoxService should not crash on exit (bug #10326; 4.1.10 regression)
Windows Additions: set the correct time stamp when a file is closed (bug #6473)
Windows Additions: better help if the DirectX backups are not properly installed
Linux Additions: Linux 3.4-rc1 compile fixes

Version 4.1.6 | Release Date: 2011-11-04 | Download

This is a maintenance release. The following items were fixed and/or added:

- VRDP: fixed screen corruption
- NAT: the interface stopped working after a lot of failed ICMP requests (bug #9371)
- E1000: fixed rare Windows 7 guest hangs, either at boot time or when reconfiguring the network card in unusual setups (bug #6223)
- ATA: fixed a possible crash during ATAPI passthrough with certain guests
- ATA: improved compatibility with ancient Linux kernels
- Main: fixed incorrect framebuffer information after leaving the fullscreen mode with X11 guests, this lead to a scrambled preview window in the GUI for example
- Mac OS X hosts: fixed the problem with duplicate packets when bridged to a wireless interface (bug #9648)
- Linux hosts: fix for 3D support on Fedora 15 (bug #9799)
- Linux hosts: don't call del_timer_sync from an interrupt context (Fedora bug report 746331)
- Windows Vista and 7 guests: more WDDM fixes
- Linux Additions: fixed kernel module compilation failure on Redhat Enterprise Linux 4 (bug #9709)
- Linux Additions: install the DRI driver correctly on Ubuntu 11.10 guests
- Solaris Additions: added read-only mmap support for shared folders
- Solaris Additions: added directory, file mode and mask options for shared folders
- Windows Additions: implemented faster detection of logged-in guest users and stale sessions
- X.Org Additions: fixed graphical corruption when switching to a virtual terminal (bug #9490)

Version 4.1.4 | Release Date: 2011-10-03 | Download

This is a maintenance release. The following items were fixed and/or added:

VMM: fixed PAE guests running on 32-bit hosts (4.0 regression; bug #9458)
VMM: fixed INVALID_PARAMETER guru meditation caused by insufficient memory conditions (4.1.0 regression; bug #9240)
VMM: fixed clobbered CPU registers during stos/lods/ins/outs emulation under rare circumstances
VMM: another fix for 64-bit guests on recent AMD CPUs
GUI: warn the user if he uses an outdated extension pack and allow to download and upgrade in that case (bug #8025)
GUI: fixed spurious LCtrl key events on some Windows hosts (4.0.6 regression; bug #373)
VBoxManage: another fix for extpack install --replace (bug #9308)
VBoxManage: allow to specify the UUID of the target image in convertfromraw
VRDP: fixed a rare crash when two or more clients connect to the server (bug #9503)
VRDP: fixed a case when a client was not resized correctly (bug #9242)
USB: make device capturing work on Windows hosts with usbhub class filter drivers installed (bug #9298); bugfixes for Windows host USB support
VHD: fixed reads crossing block boundaries (bug #8532)
VMDK: fixed progress indicator when creating split VMDK images
Floppy: fixed medium size detection for physical mediums (Windows hosts only)
Main: fixed VM initialization if a shared folder does not exist (bug #7941)
Main: fixed possible deadlock between hard disk enumeration and resetting of immutable disks (bug #9549)
Main: fixed not detaching of virtual storage after a snapshot restore operation (bug #8296)
Main: always reset modified state after restoring a snapshot (bug #9387)
Main: fixed writing of changed VM settings to disk when using snapshots (bug #8932)
Main: fixed taking screen shots (e.g. the preview window) for headless VMs if the Guest Additions are active
Virtio-net: fixed the problem with UDP packets exceeding MTU (bug #9370)
3D Support: fixed incorrect rendering and possible crashes when switching to/from fullscreen with enabled 2D acceleration
3D Support: fixed compiz under ubuntu 9.10
Guest control: Miscellaneous small bugfixes
Linux / Solaris hosts: don't use hard links in packages (4.1.2 regression; bug #9441)
Mac OS X hosts: fix installation issues when installed as root (bug #1578)
Mac OS X hosts: fixed packet capture issues with vboxnetX host-only interfaces (bug #8076)
Solaris hosts: fixed incoming multicast packets for Crossbow based bridged networking (bug #9532)
Solaris hosts: fixed starting EFI guests due to missing EFI ROM files (bug #9535)
Windows hosts installer: fixed ADDLOCAL usage on command line (4.1.0 regression; bug #9488)
Windows hosts installer: fixed dangling shortcut to the .chm help file (bug #9646)
Windows hosts installer: try to fix installation error 2869 which appeared under certain circumstances (bug #9664)
Windows hosts: VBoxHeadless should never open a separate console window (bug #3549)
Guest Additions: fixed hang while waiting for guest execution output (4.1.2 regression; bug #9446)
Linux Additions: add support for X.Org Server 1.11 (bug #9519)
Linux Additions: suppress an incorrect error message and allow a shared folder to be mounted in multiple places (bug #9627)
Linux Additions: start VBoxService correctly on openSUSE 12.1 (bug #6229)
Linux Additions: properly finish the installation even if the compilation of the DRM module fails (which is not fatal)
Solaris Additions: fixed memory leaks and panics while mounting (from console) and unmounting shared folders.
Windows Additions: fixed swapped mouse cursor hotspot coordinates (4.1.0 regression; bug #9447)
Windows Additions: fixed PAGE_FAULT_IN_NONPAGED_AREA BSOD in VBoxDisp.dll when running SnippingTool (bug #9508)
Windows Additions: make image viewer work correctly with Aero enabled (Vista and Windows 7)
Windows Additions: fixed incorrect window border blurs under Aero with ATI cards (Vista and Windows 7)
Windows Additions: fixed incorrect rendering when moving 3D applications outside guest desktop and back under Aero (Vista and Windows 7)
Windows Additions: fixed guest hangs when switching back from fullscreen text mode apps (bug #9636)

Version 4.1.2 | Release Date: 2011-08-15 | Download

VirtualBox 4.1.2 (released 2011-08-15)

This is a maintenance release. The following items were fixed and/or added:

* VMM: fixed 64-bit guests on AMD Fusion CPUs (bug #8824)
* VMM: fixed handling of the sysenter/sysexit machine instructions in 64-bit guests on Intel hosts
* GUI: added linked clone support
* GUI: fixed error check when changing the VM controller settings (4.1.0 regression; bug #9246)
* GUI: fixed the inclusion of additional information (license, vendor, ...) on OVF export
* GUI: when taking a snapshot from the VM selector, don't do a live snapshot
* GUI: fixed immediate crash during start on certain environments due to a library version conflict
* Guest control execution: implemented copying single files from guest to the host (directories and filters not supported yet)
* Guest control execution: limited to serve up to 5 guest processes at a time by default
* Main: return the correct RDP default port fixing settings warnings in the GUI if the remote display was enabled at runtime (bug #9368)
* VBoxSVC: made the path comparison OS independent when images are registered (bug #9303)
* VBoxSVC: several fixes/performance improvements for cloning of VMs
* Snapshots: fixed "Solid-State drive" flag survival on snapshot creation (bug #9379)
* VBoxManage: implemented copyfrom and stat guest control tools to copy files from guest to host and to check for existence of files on the guest
* VBoxManage: fixed extpack install --replace (bug #9308)
* VBoxManage: allow to start multiple VMs with startvm
* VBoxManage: experimental support for SATA CD/DVD hotplugging
* Mouse support: fixed an off-by-one pointer position error affecting Windows guests (bugs #7566, #9321)
* VRDP: fixed a case when the screen was not redrawn correctly (bug #9242)
* NAT: changed TCP connection establishment according to Winsock API requirements (Windows hosts only; bug #8919)
* USB: fixed device recognition issues (bugs #9299) and fixed several device capturing issues (Windows hosts; bug #9299)
* USB: fixed issues with remote filters being applied to local USB devices
* OVA: fixed import of renamed OVA files (bug #9033)
* Windows host: fixed icon for .VDI files (bug #9393)
* Solaris hosts: fixed a bug preventing parallel usage of multiple host NICs with Crossbow based bridged networking
* Linux hosts: fixed random kernel panics on host suspend / shutdown (4.1.0 regression; bug #9305)
* Guest Additions: keep logged in user count in out-of-memory situations and warn about it
* Solaris Additions: fixed shared folders due to missing symbols in the vboxfs module (4.0.12 / 4.1.0 regression; bug #9264)
* Windows Additions: fixed file truncation on a shared folder with some applications (bugs #9276, #9315)
* Windows Additions: fixed shared folder issues with antivirus software and 64 bit Windows guests (bug #9318)
* Windows Vista and 7 guests: WDDM driver fixes and performance enhancements, fixed WinSAT crashes (#9267)
* Linux Additions: fixed llseek() for Linux kernels 2.6.37 and above

VirtualBox 4.1.0 (released 2011-07-19)

This version is a major update. The following major new features were added:

* Support for cloning of VMs (bug #5853, see the manual for more information): full clones can be created through the GUI and VBoxManage, linked clones only through VBoxManage
* GUI: enhanced wizard for creating new virtual disks
* GUI: new wizard for copying virtual disks
* GUI: keep the aspect ratio in scale mode (Windows and OSX hosts only; bug #7822)
* VMM: raised the memory limit for 64-bit hosts to 1TB
* Experimental support for PCI passthrough for Linux hosts, see the manual for more information
* Windows guests: Experimental WDDM graphics driver, supporting Windows Aero (bug #4607) and providing Direct3D support using a cleaner approach (no need to install the guest drivers in Safe Mode anymore)
* Guest Additions: status of modules and features can now be queried separately by the frontends
* Networking: new network attachment mode "Generic Driver", which offers an open plugin architecture for arbitrary and separately distributable virtual network implementations
* Host-only Networking: fixed host crash in kernels prior to 2.6.29
* New Networking Mode UDP Tunnel: allows to interconnect VMs running on different hosts easily and transparently, see the manual for more information
* Experimental support for SATA hard disk hotplugging available with VBoxManage
* Solaris hosts: New Crossbow based bridged networking driver for Solaris 11 build 159 and above

In addition, the following items were fixed and/or added:

* VMM: more SMP timer fixes
* VMM: fixed sporadic recompiler crashes with SMP guests
* VMM: many small fixes
* GUI: when reverting to a snapshot, ask for taking a snapshot of the current state
* GUI: added a View menu
* GUI: added a setting for the promiscuous mode policy for internal networks, bridged networks and host-only networks
* GUI: added slider for setting the CPU execution cap allowing to limit the amount of CPU time spent for the execution of the guest, see the manual for more information.
* GUI: the VM description is editable during the runtime of a VM (bug #1551)
* GUI: added proxy settings (bug #2870)
* GUI: made the number of SATA ports configurable
* GUI: decrease time before showing the VM configuration dialog
* VBoxManage: more convenient configuration of storage controller attachments by automatically determining the port or device parameter when a storage controller has only one port or device per port
* VBoxManage: changed syntax of the guestcontrol command group, fixed various bugs, removed obsolete options
* VBoxBalloonCtrl: new service for automatic dynamic adjustment of the balloon size for running VMs
* Settings: machine names and snapshot names are not allowed to be a valid UUID
* Settings: provide better diagnostics if a single medium is used twice in a VM configuration
* Settings: provide better diagnostics for errors in medium create/merge/clone operations, and fix memory leaks in error cases
* Storage: ATA/SATA drives can be marked as non-rotational, i.e. the guest OS will detect them as a SSD if supported, which can improve performance
* Storage: virtual CD/DVD images will be detached if the guest ejects the medium, unless the drive is marked to handle ejects only on a temporary basis
* Storage: the medium UUID can be changed again when attaching a medium for the first time, which allows using images which are exact duplicates including the UUID
* Storage: fixed possible data corruption under certain circumstances with VHD and Parallels images (bug #9150)
* Storage: fixed unnecessary expansion when cloning differential images in VDI format
* Storage: fixed detection code to handle empty files for VDI and VMDK format
* Storage: fixed access to CD/DVD images beyond 4GB when using the SATA controller (bug #8592)
* Floppy: several bugs have been fixed
* Floppy: make it possible to unmount a host floppy disk (bug #6651)
* BIOS: disk-related structures are now checksummed correctly (bug #8739)
* USB: many fixes for the Windows USB host driver
* NAT: reduced memory footprint
* Networking: fixed the problem with segmentation offloading when several VMs are transmitting in parallel
* Networking: workaround for a bug in wireshark when operating directly on a capture file created by VirtualBox
* Serial: announce the serial devices in the ACPI tables to make Windows guests find the virtual hardware (bug #7411)
* VRDP: support for TLS connections (see the manual for more information)
* VRDP: support for multimonitor client configurations with MS RDP clients
* VRDP: fixed a rare screen corruption
* 3D support: fixed GL_VERSION string for different locales (bug #8916)
* Webservice: fixed timeout handling with HTTP 1.1 keepalive, and be more robust when connections fail
* VBoxSVC: fixed regression when several clients trigger autostart simultaneously
* Main: fixed incorrect handling of the medium location for media which are not file based (e.g. iSCSI), which resulted in confusing location values in many places
* JAX-WS client bindings: fixed resource leak
* Sources: fixed USB 2.0 support using extension packs for non-official builds
* Mac OS X hosts: fixed non-VT-x mode on Lion hosts
* Windows hosts: fixed copy'n'paste in the GUI and for the VM window (bug #4491)
* Windows hosts (64-bit only): enabled removing of all mediums when removing a VM
* Windows hosts (64-bit only): enabled live snapshot deletion
* Windows hosts: use native controls in the installer (bug #5520)
* Solaris hosts: fixed preemption issue with Solaris 11 hosts (builds 166 and above)
* Solaris hosts: better control of USB device access on Solaris 11 hosts
* Guest Additions: improved driver installation on Windows guests
* Guest Additions: fixed high CPU usage while executing guest programs from the host
* Solaris Additions: fixed automounting of shared folders (bug #8014)

VirtualBox 4.0.12 (released 2011-07-15)

This is a maintenance release. The following items were fixed and/or added:

* Mac OS X hosts: Lion fixes
* Solaris hosts: fixed preemption issue with Solaris 11 hosts (builds 166 and above)
* VBoxManage: more convenient configuration of storage controller attachments by automatically determining the port or device parameter when a storage controller has only one port or device per port (bug #9188)
* Storage: fixed possible data corruption under certain circumstances whith VHD and Parallels images (bug #9150)
* Storage: fixed access to CD/DVD images beyond 4GB when using the SATA controller (bug #8592)
* Floppy: make it possible to unmount a host floppy disk (bug #6651)
* Networking: fixed the problem with segmentation offloading when several VMs were transmitting at once
* 3D support: fixed GL_VERSION string for different locales (bug #8916)
* Sources: fixed USB 2.0 support using extension packs for non-official builds
* Solaris Additions: fixed automounting of shared folders (bug #8014)

VirtualBox 4.0.10 (released 2011-06-27)

This is a maintenance release. The following items were fixed and/or added:

* GUI: fixed disappearing settings widgets on KDE hosts (bug #6809)
* Storage: fixed hang under rare circumstances with flat VMDK images
* Storage: a saved VM could not be restored under certain circumstances after the host kernel was updated (bug #8983)
* Storage: refuse to create a medium with an invalid variant (for example Split2G with VDI; bug #7227)
* Snapshots: none of the hard disk attachments must be attached to another VM in normal mode when creating a snapshot
* USB: fixed occasional VM hangs with SMP guests (bug #4580)
* USB: proper device detection on RHEL/OEL/CentOS 5 guests (partial fix for bug #8978)
* ACPI: force the ACPI timer to return monotonic values for improve behavior with SMP Linux guests (bug #8511 and others)
* RDP: fixed screen corruption under rare circumstances (bug #8977)
* rdesktop-vrdp: updated to version 1.7.0
* OVF: under rare circumstances some data at the end of a VMDK file was not written during export
* Mac OS X hosts: Lion fixes (bug #8903)
* Mac OS X hosts: GNOME 3 fix
* Linux hosts: fixed VT-x detection on Linux 3.0 hosts (bug #9071)
* Linux hosts: fixed Python 2.7 bindings in the universal Linux binaries
* Windows hosts: fixed leak of thread and process handles
* Windows Additions: fixed bug when determining the extended version of the Guest Additions (4.0.8 regression; bug #8948)
* Solaris Additions: fixed installation to 64-bit Solaris 10u9 guests (4.0.8 regression)
* Linux Additions: RHEL6.1/OL6.1 compile fix
* Linux Additions: fixed a memory leak during VBoxManage guestcontrol execute (bug #9068)

VirtualBox 4.0.8 (released 2011-05-16)

This is a maintenance release. The following items were fixed and/or added:

* Mac OS X hosts: fixed incompatibility with recent Mac OS X versions in 64-bit mode (bug #8474)
* Mac OS X hosts: fixed incompatibility with hosts with more than 16 cores (bug #8389)
* Mac OS X hosts: fixed painting corruptions on a second monitor in 64-bit mode (bug #7606)
* GUI: restored functionality to set an empty host key to disallow any host key combination (4.0.6 regression; bug #8793)
* VBoxManage: added controlvm screenshotpng subcommand for saving the screenshot of a running VM in PNG format
* VBoxHeadless: fixed potential crash during shutdown (Windows hosts only)
* NAT: built-in services use the correct Ethernet addresses in Ethernet header and in ARP requests
* Host-only networking: fixed adapter reference counting
* E1000: fixed rare guest crashes with Linux SMP guests (bug #8755)
* SATA: fixed guest disk corruption under rare circumstances (only relevant for guests with more than 2GB RAM; bug #8826)
* Storage: fixed data corruption after a snapshot was taken with asynchronous I/O enabled (bug #8498)
* Floppy: several improvement
* HPET: another fix for time jumps (bug #8707)
* USB: removed assumption that string descriptors are null-terminated (Windows hosts only)
* 3D support: fixed a potential crash when resizing the guest window
* 3D support: fixed GNOME 3 rendering under Ubuntu 11.04 and Fedora 15
* Snapshots: fixed another bug which could lose entries in the media registry when restoring a snapshot (bug #8363)
* Shared Folders: don't stop mounting the other valid folders if one host folder is inaccessible (4.0.6 regression)
* Linux Additions: check whether gcc and make are installed before building kernel modules (bug #8795)
* Solaris Additions: added support for X.Org Server 1.10
* Guest Additions: fixed inappropriate Guest Additions update notification when using vendor-specific version suffixes (bug #8844)

VirtualBox 4.0.6 (released 2011-04-21)

This is a maintenance release. The following items were fixed and/or added:

* VMM: fixed incorrect handling of ballooned pages when restoring a VMM from a saved state
* VMM: don't crash on hosts with more than 64 cores / hyperthreads; implemented support for up to 256 host cores (except Windows hosts; bug #8489)
* VMM: fixed guru meditation for PAE guests running on hosts without PAE (bug #8006)
* VMM: fixed slow Linux guests with raw mode and recent guest kernels (bug #8726)
* GUI: support host key combinations (bug #979)
* GUI: fixed progress indicator (bug #7814)
* GUI: show the mouse pointer while the VM is paused if the USB tablet mouse emulation is used (bug #6799)
* GUI: adapt the snapshot folder as well when renaming a VM (bug #8469)
* GUI: persistently remember the last folders of the disk/DVD/floppy selectors
* GUI: never allow to start a VM with USB-2.0 activated if the proper extension pack is missing (bug #8182)
* GUI: fixed hang/crash when opening a file dialog in an non-existing folder (bug #8673)
* Snapshots: fixed a bug which could lose entries in the media registry when restoring a snapshot (bug #8363)
* Snapshots: allow snapshots to be stored in the VM directory
* 3D support: fixed a crash if a VM was forced to terminate (Windows hosts only; bug #7133)
* Storage: fixed memory leak (4.0 regression; bug #7966)
* Storage: fixed access to iSCSI targets over internal network
* Storage: fixed reading from disks with more than one snapshot for VHD and VMDK images with disabled host cache (bug #8408)
* Storage: fixed a possible hang during VM suspend after an I/O error occurred
* Storage: fixed a possible hang during VM suspend / reset (bug #8276, #8294)
* Storage: automatically create a diff image when attaching a streamOptimized VMDK image to a VM
* ATA/SATA: fixed automounting of virtual CD/DVD mediums with recent Linux distributions by correctly reporting the current profile as 'none' if no medium is present
* Buslogic: fixed emulation for certain guests (e.g. jRockit VE)
* Host-Only Networking: fixed interface creation failure on Windows hosts (4.0.4 regression; bug #8362)
* Host-Only & Bridged & Internal Networking: fix for processing promiscuous mode requests by VMs, defaulting to switch behaviour
* Host-Only Networking: fixed connectivity issue after resuming the host from sleep (bug #3625)
* Bridged Networking: support for interface bonding on Mac OS X hosts (bug #8731)
* NAT: fixed processing of ARP announcements for guests with static assigned IPs (bug #8609)
* VRDP: backward compatibility with VRDPAuth external authentication library (bug #8063)
* Shared Folders: don't fail to start a VM if a path is not absolute, for example when importing an OVF from a different host (bug #7941)
* Audio: fixed crash under certain conditions (bug #8527)
* USB: fixed a crash when plugging certain USB devices (bug #8699)
* HPET: fixed time jumps when reading the counter (bug #8707)
* OVF/OVA: automatically adjust disk paths if the VM name is changed on import
* OVF/OVA: fix export to slow medias
* OVF/OVA: automatically repair inconsistent appliances with multiple disks (bug #8253)
* rdesktop-vrdp: fixed an assertion triggered under certain conditions (bug #8593)
* Windows hosts: fixed occasional hangs during VM shutdown because sometimes COM was not properly uninitialized
* Mac OS X hosts: prevent the mouse from leaving the VM window while captured
* Mac OS X hosts: keep aspect ratio while resizing in scale mode (shift for old behaviour) (part of bug #7822)
* X11 hosts: fixed Yen key support (bug #8438)
* X11 hosts: fixed a regression which caused Host+F1 to pop up help instead of sending Ctrl+Alt+F1
* Linux hosts / Linux Additions: mangle IPRT symbols to allow installing VirtualBox inside a VM while the Guest Additions are active (bug #5686)
* Linux hosts / Linux guests: workaround for a bug in GLIBC older than version 1.11 leading to crashes under certain conditions (signed/unsigned problem with memchr on 64-bit machines)
* Solaris hosts: fixed a deadlock in event semaphores that could lead to unkillable VM processes
* Windows Additions: fixed Sysprep parameter handling
* Windows Additions: fixed spontaneous guest reboots under certain circumstances (4.0.2 regression; bugs #8406, #8429)
* Windows Additions: added auto logon support for locked workstations on legacy Windows versions
* Windows Additions: fixed driver bugcheck error when handling PnP messages (4.0 regression; bug #8367)
* Windows Additions: fixed memory leak in VBoxVideo
* X11 Additions: added support for X.Org Server 1.10 final
* Linux Additions: Linux kernel 2.6.39-rc1 fixes
* Linux Additions: improved auto-run support (bug #5509)
* Linux Additions: fix mouse support on SUSE 11 SP 1 guests (bug #7946)
* Solaris Additions: added support for X.Org Server 1.9
* Guest Additions: various bugfixes for guest control execution
* Webservice: use own log file, with log rotation to limit size

Version 4.0.4 | Release Date: 2011-02-17 | Download

This is a maintenance release. The following items were fixed and/or added:
* VMM: fixed recompiler crashes under certain conditions (bugs #8255, #8319 and further)
* VMM: fixed running 64-bit guests on 32-bit host with nested paging enabled on AMD CPUs (4.0 regression; bug #7938)
* VMM: fixed timing issues / hangs for certain guests using the programmable interval timer (bugs #8033 and #8062)
* VMM: large page and monitoring fixes for live snapshots (bugs #7910, #8059, #8125)
* GUI: fixed error message when trying to exceed the maximum number of host network interfaces
* GUI: fixed saving of changes to the metadata of an existing snapshot (bug #8145)
* GUI: fixed rare crash on X11 hosts (bug #8131)
* GUI: when selecting a shared folder, start the file dialog in the users home directory (bug #8017)
* ExtPack: enforce the correct permissions which might be restricted by umask when creating directories (non-Windows hosts only; bug #7878)
* VBoxSDL: fixed crash when starting by specifying the VM UUID (4.0 regression; bug #8342)
* VBoxManage: allow savestate even if the VM is already paused
* VBoxManage: fixed modifyvm --synthcpu (bug #6577)
* VBoxManage: fixed hang when doing guestcontrol execute –wait-for exit and displaying process status on exit (bug #8235)
* VBoxManage: decreased CPU load during guestcontrol execute –wait-for exit/stdout while waiting for the guest process to terminate (bug #7872)
* VBoxManage: fixed list hostdvds/hostfloppies
* VBoxManage: fixed storageattach for host DVD drives and host floppy drives
* Metrics: introduced RAM/VMM base metric.
* Main: improved sanity check when taking a VM screen shot (bug #7966)
* Main: fixed a crash under rare circumstances if a VM failed to start
* Main: fixed attaching of immutable disk images (bug #8105)
* Main: fixed a crash at VM shutdown (bug #6443)
* Main: fixed incorrect handling of cross-referenced medium attachments (bug #8129)
* Settings: fixed truncating of big integer values (4.0 regression)
* Settings: properly store the ICH9 chipset type (bug #8123)
* Host-Only & Bridged Networking: fixed VBox DHCP server startup issue for Windows hosts (4.0 regression; bug #7905)
* Host-Only Networking: re-create vboxnetX interfaces after vboxnetadp.ko module reload on Linux and Darwin (bugs #5934, #6341)
* NAT: fixed an mbuf leak under rare circumstances (bug #7459)
* ACPI: don’t allow the guest to enter S4 by default and don’t announce S1 and S4 in the ACPI tables if disabled (bug #8008)
* Graphics card: made re-enabling disabled screens work correctly to prevent problems when X11 guests enter screen saving mode (bug #8122)
* Storage: fixed write errors with snapshots if the host cache is disabled (4.0 regression; bug #8221)
* ATA/SATA: fixed reset handling after ACPI suspend/resume
* BusLogic: fixed hang with SMP VMs
* Serial: another attempt to prevent lost characters during transmission (bug #1548)
* Linux hosts/guests: Linux 2.6.38-rc1 compile fixes
* Mac OS X hosts: fixed VBoxSVC crash when listing host interfaces without default gateway (64-bit hosts only; bug #7955)
* Solaris/Darwin hosts: fixed VM CPU execution cap
* X.Org guests: fixed a crash on X server restart (bug #8231)
* X.Org guests: support X.Org Server 1.10 pre-release and Ubuntu 11.04 Alpha.
* X.Org guests: Add EDID emulation in the graphics driver to prevent GNOME settings daemon changing the mode on login.
* X.Org guests: never send graphics modes to the host that older VirtualBox versions can’t handle.
* Linux Additions: fixed a memory leak in the shared folders code if a host link is not readable (bug #8185)
* Windows Additions: fixed handling of Security Attention Sequence (SAS) with VBoxGINA

Version 4.0.2 | Release Date: 2011-01-18 | Download
No changes specified
Version 3.2.12 | Release Date: 2010-11-30 | Download

VirtualBox 3.2.12 (released 2010-11-30)

This is a maintenance release. The following items were fixed and/or added:

  • VMM: fixed rare host crash when running 64-bit guests on 32-bit hosts (bug #7577)
  • VMM: fixed host reboots under rare circumstances due to NMIs triggered by active performance counters (Linux hosts in non-VT-x/AMD-V mode only; bug #4529)
  • VMM: fixed out of memory guru meditation for large memory guests (bug #7586)
  • VMM: fixed a guru meditation related to large pages
  • VMM: use new VT-x feature to keep the guest from hogging the CPU
  • Snapshots: implemented deleting the last remaining snapshot while the VM is running
  • GUI: perform the checks for exceeding the size limit of the host file system and for broken asynchronous I/O on older Linux kernels with ext4 / xfs file systems not only when starting the VM from scratch but also when starting from a saved state
  • NAT: fixed memory leak (3.2.0 regression; bugs #6918, #7353)
  • Networking: fixed VM reset handling in e1000
  • VRDP: fixed rare crash in multimonitor configuration
  • Display: fixed occasional guest resize crash
  • Mouse: don't send relative mouse events together with absolute mouse events (3.2.10 regression; bug #7571)
  • Keyboard: fixes for the USB keyboard emulation; fixes for Koran keyboards
  • Serial: don't hang if the host device would block during open (bugs #5756, #5380)
  • Serial: fixed modem status lines (Linux hosts only; bug #812)
  • Graphics: Horizontal resolutions are no longer restricted to a multiple of 8 pixels (bug #2047; requires Guest Additions update).
  • USB: fixed a crash with older Linux kernels and non-ASCII characters in device strings (Linux hosts only; bug #6983, #7158, #7733; version 3.2.8 contained an incomplete fix)
  • USB: fixed a crash under rare circumstances (bug #7409; Windows hosts only)
  • iSCSI: respond to NOP-In requests from the target immediately to avoid being disconnected if the guest is idle
  • 3D support: fixed a crash under certain circumstances (bug #7659)
  • 3D support: fixed crashes for GLUT based apps (bug #6848)
  • 3D support: added missing GLX 1.3 functionality (bugs #7652, #7195)
  • 2D Video acceleration: fixed potential deadlock when saving the VM state (bug #4124)
  • Windows hosts: another fix for BSODs under certain circumstances in VBoxNetFlt.sys (bug #7601)
  • Solaris hosts: fixed host USB DVD drive detection
  • Mac OS X hosts: fixed swapped keys for certain ISO keyboard types (bug #2996)
  • Linux hosts: added link state handling for TAP devices needed for proper operation with bridged networking on kernels 2.6.36 and above (bug #7649)
  • Linux hosts/guests: Linux 2.6.37 fixes
  • Linux Additions: properly compile the vboxvideo module if DKMS is not installed (bug #7572)
  • Linux Additions: fixed a memory leak when accessing non-existing files on a Shared Folders (bug #7705)
  • Windows Additions: skip none-mapped user accounts when enumerating user accounts for VM information

Version 3.2.10 | Release Date: 2010-10-08 | Download
  • VMM: V8086 mode fix for legacy DOS/Windows guests with EMM386 (3.2.8 regression)
  • VMM: stability fix (bug #7342)
  • VMM: fixed a Guru meditation related to large pages (bug #7300)
  • VMM: fixed support for large pages on Linux hosts
  • VMM: fixed a Guru meditation for large memory 64-bit guests on 32-bit hosts with nested paging (bug #7544
  • VMM: performance improvements for VMs with more than 2 GB RAM (bug #6928)
  • GUI: fixed host key handling if the host key is set to Left Alt (Linux/Solaris hosts only; 3.2.0 regression; bug #6758)
  • GUI: the VM can be minimized from the mini toolbar (bug #4952)
  • GUI: handle Ctrl+Break properly on X11 hosts (3.2.0 regression; bug #6122)
  • GUI: fixed the case where the user aborted the media selector for selecting the boot hard disk from the VM wizard
  • GUI: added a check for Linux kernels 2.6.36 or later which are known to have the asynchronous I/O bug on ext4 / xfs file systems fixed (Linux hosts only)
  • OpenSolaris guests: use SATA controller by default
  • Storage: fixed I/O errors in the guest after compacting VDI images (3.2.6 regression; bug #7294)
  • Storage: automatically repair base disk images with non-zero parent UUID which made them inaccessible (bug #7289)
  • Storage: fixed corrupted images if a merge operation was canceled
  • IDE: added ATAPI passthrough support for audio CDs (bug #3494)
  • SATA: fixed a potential hang during boot of recent Solaris guests
  • SATA: handle out of disk space and similar conditions better
  • iSCSI: fixed sporadic hangs when closing the connection
  • VGA: fixed missing redraw with multiple screens under certain circumstances (bug #7291)
  • VGA: serveral small fixes for legacy VGA graphics modes
  • Bridged networking: fixed occasional host freeze during VM shutdown (Linux hosts only)
  • NAT: don't check for the existence of the TFTP prefix when delivering a file via bootp (bug #7384)
  • NAT: fixed resolving of names at the host resolver (bug #7138)
  • NAT: under rare conditions the NAT engine consumed 100% CPU load (non-Windows hosts only)
  • VRDP: fixed memory leak under certain circumstances (bug #5966)
  • VRDP: fixed missing redraws with Windows guests under certain circumstances
  • USB: properly discard blocking outstanding bulk URBs, fixes some printers
  • USB: Blackberry fix (bug #6465)
  • VBoxHeadless: fixed event queue processing problems which led to hangs if the VM could not be started successfully
  • VBoxManage: don't crash if parameters with invalid characters are passed (bug #7388)
  • VBoxManage: clonehd: fixed a bug where the command aborted with an error message under rare circumstances
  • VBoxManage: metrics: made it work for directly started VMs again (3.2.8 regression; bug #7482)
  • 3D support: report GLX_ARB_get_proc_address as supported extension
  • 3D support: guest application stack corruption when using glGetVertexAttrib[ifd]v (bug #7395)
  • 3D support: fixed broken 3D support when switching to fullscreen/seamless modes (bug #7314)
  • 3D support: fixed 32bit OpenGL apps under 64bit Windows XP/Vista (bug #7066)
  • OVF: fixed bug when exporting a VM with multiple attached disks (bug #7366)
  • OVF: fixed slow export for certain filesystems (bug #3719)
  • OVF: disabled manifest (.mf file) support; manifests are no longer verified on import nor written on export
  • Shared clipboard/Windows: improved the reliability of the shared clipboard on Windows hosts and guest (partial fix to bug #5266)
  • Shared Folders: don't show an empty directory if filenames with an invalid encoding exist on the host (bug #7349)
  • Shared Folders: return the proper error code when trying to list files for a non-existing wildcard (bug #7004)
  • Audio: fixed guest memory corruption when capturing from the NULL audio backend (bug #6911)
  • Audio: improved playback quality (less choppy) (bug #6816)
  • Web service: avoid unnecessary creation of idle threads
  • Additions: fixed bug in the guest execution feature when passing more than one environment variable
  • Additions: refresh all guest properties written by VBoxService after the VM was restored from a saved state
  • Additions: fixed a division by zero crash of VBoxService under certain circumstances
  • Additions: immediately resynchronize the guest time with the host time after the VM was restored from a saved state (bug #4018)
  • Additions/Windows: fixed LsaEnumerate error when enumerating logged in users
  • Additions/X.Org: support X.Org Server 1.9 (bug #7306)
  • Additions/X.Org: don't crash VBoxClient during reboot
  • Solaris hosts: fixed host DVD drive enumeration on Solaris 10
  • Solaris hosts: added a custom core dumper to procure more data in the event of a VM crash
  • Solaris guests: fixed user idle detection
  • Solaris guests: fixed a possible panic in Shared Folders when using the wrong user or group IDs (bug #7295)
  • Solaris guests: fixed Shared Folders from truncating files to 2GB on 32-bit guests (bug #7324)
  • Windows hosts: fixed a BSOD under certain circumstances in VBoxNetFlt.sys (bug #7448)
  • Linux hosts/guests: Linux 2.6.36 fixes
  • Linux hosts/guests: DKMS fixes (bug #5817)
  • Mac OS X hosts: fixed missing dock menu entries (bug #7392)
Version 3.2.8 | Release Date: 2010-08-06 | Download

A maintenance release of VirtualBox 3.2 which improves stability and fixes regressions

Version 3.2.4 | Release Date: 2010-06-07 | Download

This is a maintenance release. The following items were fixed and/or added:

  • GUI: fixed a superfluous resize-event on powering-on VM for X11 (improvement for the 3.2.2 fix)
  • Host-only/bridged networking: fixed guest-to-guest communication over wireless (3.2.0 regression; bug #6855)
  • Storage: fixed a potential guest disk corruption with growing images (3.2.0 regression)
  • Page Fusion: fixed shared module detection for Win64 guests
  • 3D support: allow use of CR_SYSTEM_GL_PATH again (bug #6864)
  • 3D support: fixed a host assertion for some multi-threaded guest applications (bug #5236)
  • 3D support: fixed host crashes with nVIDIA drivers on WDDM startup
  • OVF: fixed import of OVFs with a VM description (annotation) (3.2.2 regression; bug #6914)
  • VRDP: fixed issues with secondary monitors (bug #6759)
Version 3.1.6 | Release Date: 2010-03-25 | Download

This is a maintenance release. The following items were fixed and/or added:

  • Linux hosts: fixed timing issue on hosts with Linux kernels 2.6.31 or later with certain CPUs (asynchronous timer mode; bug #6250)
  • Linux hosts: properly handle host suspend/resume events on Linux kernels 2.6.30 or later (bug #5562)
  • Mac OS X hosts: fixed VBoxSVC crash while enumerating the host network interfaces under certain circumstances
  • Snapshots: fixed image corruption after snapshot merge under certain circumstances (bug #6023)
  • Snapshots: fixed crash with VBoxHeadless / OSE
  • VMM: fixed reference counting guru meditation (bug #4940)
  • VMM: improved guest SMP stability
  • VMM: fixed VT-x hardware debug issues (bugs #477 & #5792)
  • VMM: fixed PGMDynMapHCPage guru meditation (Mac OS X; VT-x only; bug #6095)
  • VMM: fixed pgmPoolTrackFlushGCPhysPTInt guru meditations (Mac OS X; VT-x only; bugs #6095 & #6125)
  • VMM: Fixed host crash when running PAE guests in VT-X mode (Mac OS X only; bug #5771).
  • GUI: fix displaying of error message (bug #4345)
  • GUI: fix inability to enter seamless mode (bugs #6185, #6188)
  • 3D support: fixed assertion and flickering when guest application uses several windows with a single OpenGL context (bug #4598)
  • 3D support: fixed host crashes when using GL_EXT_compiled_vertex_array and array element calls (bug #6165)
  • 3D support: fixed runtime linker errors with OpenGL guest libs (bug #5297)
  • 3D support: fixed OpenGL extension viewer crash on startup (bug #4962)
  • NAT: fixed a 3.1.4 regression on Windows hosts where graceful connection termination was broken (bug #6237)
  • NAT: alternative network setting was not stored persistent (bug #6176)
  • NAT: fixed memory corruption during ICMP traffic under certain circumstances
  • Network: allow to switch the host interface or the internal network while a VM is running (bug #5781)
  • VHD: fix for images with a block size different than 2MB
  • USB: fixed filtered device attach regression (bug #6251)
  • USB: fixed crash in OHCI under rare circumstances (bug #3571)
  • VRDP: fixed hang under rare circumstances when attaching USB devices
  • ACPI: prevent guest freezes when accessing /proc/acpi for determining the state of the host battery and the AC adapter (Linux hosts only; bug #2836)
  • PulseAudio: fixed guest freezes under certain conditions (3.1.4 regression; bug #6224)
  • BIOS: increased space for DMI strings
  • BIOS: fixed interrupt routing problem for certain configurations (I/O-APIC enabled, ACPI not used; bug #6098)
  • iSCSI: be more robust when handling the INQUIRY response
  • iSCSI: be more robust when handling sense data
  • BusLogic: fixed FreeBSD guests
  • webservice: vboxwebsrv is now multithreaded
  • Solaris Installer: fixed netmask to stay persistent across reboots for Host-only interface (bug #4590)
  • Linux installer: removed external dependency to libpng12.so (bug #6243)
  • Solaris Additions: fixed superfluous kernel logging (bug #6181)
  • Linux Additions: fixed hang when starting the X server in Fedora12 guests and in guests with Linux 2.6.33 or later (bug #6198)
  • Linux Additions: support Mandriva speedboot runlevel (bug #5484)
  • Linux Additions: fixed SELinux security context of mount.vboxsf (bug #6362)
  • Linux Additions: support Ubuntu 10.04 (bug #5737)
  • Web service: update PHP bindings to fix problems with enums and collections
Version 3.1.6 | Release Date: 2010-03-25 | Download
No changes specified
Version 3.1.4 | Release Date: 2010-02-12 | Download
No changes specified
Version 3.1.2 | Release Date: 2009-12-17 | Download

This is a maintenance release. The following items were fixed and/or added:

  • VMM: fixed SMP stability regression
  • USB: fixed USB related host crashes on 64 bits Windows hosts (#5237)
  • Main: wrong default HWVirtExExclusive value for new VMs (bug #5664)
  • Main: DVD passthrough setting was lost (bug #5681)
  • VBoxManage: iSCSI disks do not support adding a comment (bug #4460)
  • VBoxManage: added missing --cpus and --memory options to OVF --import
  • GUI: fixed VBox URL in update dialog for German and Dutch languages
  • GUI: NLS updates
  • OVF: fixed export of non standard storage controller names (bug #5643)
  • Solaris hosts: several USB fixes (including support for Apple iPhone)
  • Mac OS X hosts: several fixes for the 3D support
  • Mac OS X hosts: re-enabled CMD+Key combinations, even if the Host-Key isn't CMD (bug #5684)
  • Mac OS X hosts: fixed to fast scrolling if the mouse wheel is used inside the guest (bug #5672)
  • Mac OS X hosts: dock & menubar don't disappear in fullscreen when the VM is not running on the primary display (bug #1762)
  • Mac OS X hosts: added an option for enabling "Auto show Dock & Menubar in fullscreen" (bug #5636)
  • Windows host installer: fixed starting VBox with wrong privileges right after installation (bug #4162)
  • Host interface and host-only networking: prevent driver from unloading while a VM is still active (Windows host only)
  • Host-only networking: fixed host-only interface creation (Windows host only) (bug #5708)
  • Virtio-net: don't crash without an attached network
  • Virtio-net: fixed the issue with intermittent network in VM with several virtual CPU cores.
  • NAT: fixed port-forwarding regressions (bug #5666)
  • NAT: fixed crash under certain conditions (bug #5427)
  • NAT: fixed resolving of names containing a slash or underscore when using the host resolver DNS proxy (bug #5698)
  • ATA: fixed sporadic crash when resuming after a VM was forcefully paused (e.g. due to iSCSI target being unavailable)
  • SATA: fixed raw vmdk disks (bug #5724)
  • Linux guests: increased the default memory for Redhat and Fedora guests
  • Linux Guest Additions: fixed installation on RHEL 3.9 guests and on some 64bit guests
  • Linux Guest Additions: prevent SELinux warnings concerning text relocations in VBoxOGL.so (bug #5690)
  • X11 guests: fixed mouse support for some Xorg 1.4 guests (openSUSE 11.0)
  • X11 guests: fixed xorg.conf modification for some older Xorg releases (openSUSE 11.1)
  • Windows guests: fixed some VBoxService shutdown issues
  • Windows guests: fixed VBoxVideo spinlock issues on NT4
  • Windows Guest Additions: fixed uninstallation issues of NT4
  • Shared folders: fixed resolving of symlink target (bug #5631)
  • 2D Video acceleration: delay loading of OpenGL dlls for Windows hosts to avoid GUI crashes on misconfigured systems
  • 2D Video acceleration: fixed issues with video picture not displayed on playback
Version 3.1.0 | Release Date: 2009-11-30 | Download

This version is a major update. The following major new features were added:

Teleportation (aka live migration); migrate a live VM session from one host to another (see the manual for more information)
VM states can now be restored from arbitrary snapshots instead of only the last one, and new snapshots can be taken from other snapshots as well ("branched snapshots"; see the manual for more information)
2D video acceleration for Windows guests; use the host video hardware for overlay stretching and color conversion (see the manual for more information)
More flexible storage attachments: CD/DVD drives can be attached to an arbitrary IDE controller, and there can be more than one such drive (the manual for more information)
The network attachment type can be changed while a VM is running
Complete rewrite of experimental USB support for OpenSolaris hosts making use of the latest USB enhancements in Solaris Nevada 124 and higher
Significant performance improvements for PAE and AMD64 guests (VT-x and AMD-V only; normal (non-nested) paging)
Experimental support for EFI (Extensible Firmware Interface; see the manual for more information)
Support for paravirtualized network adapters (virtio-net; see the manual for more information)

In addition, the following items were fixed and/or added:

VMM: guest SMP fixes for certain rare cases
GUI: snapshots include a screenshot
GUI: locked storage media can be unmounted by force
GUI: the a log window grabbed all key events from other GUI windows (bug #5291)
GUI: allow to disable USB filters (bug #5426)
GUI: improved memory slider in the VM settings
GUI: the VirtualBox website couldn't be opened from the help menu (bug #4559)
3D support: major performance improvement in VBO processing
3D support: added GL_EXT_framebuffer_object, GL_EXT_compiled_vertex_array support
3D support: fixed crashes in FarCry, SecondLife, Call of Duty, Unreal Tournament, Eve Online (bugs #2801, #2791)
3D support: fixed graphics corruption in World of Warcraft (#2816)
3D support: fixed Final frame of Compiz animation not updated to the screen (#4653)
3D support: fixed incorrect rendering of non ARGB textures under compiz
iSCSI: support iSCSI targets with more than 2TiB capacity
VRDP: fixed occasional VRDP server crash (bug #5424)
Network: fixed the E1000 emulation for QNX (and probably other) guests (bug #3206)
NAT: added host resolver DNS proxy (see the manual for more information)
VMDK: fixed incorrectly rejected big images split into 2G pieces (bug #5523, #2787)
VMDK: fixed compatibility issue with fixed or raw disk VMDK files (bug #2723)
VHD: fixed incompatibility with Hyper-V
Support for Parallels version 2 disk image (HDD) files; see the manual for more information
OVF: create manifest files on export and verify the content of an optional manifest file on import
OVF: fixed memory setting during import (bug #4188)
Mouse device: now five buttons are passed to the guest (bug #3773)
VBoxHeadless: fixed loss of saved state when VM fails to start
VBoxSDL: fixed crash during shutdown (Windows hosts only)
X11 based hosts: allow the user to specify their own scan code layout (bug #2302)
Mac OS X hosts: don't auto show the menu and dock in fullscreen (bug #4866)
Mac OS X hosts (64 bit): don't interpret mouse wheel events as left click (bug #5049)
Mac OS X hosts: fixed a VM abort during shutdown under certain conditions
Solaris hosts: combined the kernel interface package into the VirtualBox main package
Solaris hosts: support for OpenSolaris Boomer architecture (with OSS audio backend).
Shared folders: VBOXSVR is visible in Network folder (Windows guests, bug #4842)
Shared folders: performance improvements (Windows guests, bug #1728)
Windows, Linux and Solaris Additions: added balloon tip notifier if VirtualBox host version was updated and Additions are out of date
Solaris guests: fixed keyboard emulation (bug #1589)
Solaris Additions: fixed as_pagelock() failed errors affecting guest properties (bug #5337)
Windows Additions: added automatic logon support for Windows Vista and Windows 7
Windows Additions: improved file version lookup for guest OS information
Windows Additions: fixed runtime OS detection on Windows 7 for session information
Windows Additions: fixed crash in seamless mode (contributed by Huihong Luo)
Linux Additions: added support for uninstalling the Linux Guest Additions (bug #4039)
Linux guest shared folders: allow mounting a shared folder if a file of the same name as the folder exists in the current directory (bug #928)
SDK: added object-oriented web service bindings for PHP5

Version 3.1.0_BETA2 | Release Date: 2009-11-20 | Download

* Fixed snapshots of VMs with empty DVD attachments (3.1.0 Beta 1 regression)
* Fixed snapshots of VMs with multiple attached disk drives (3.1.0 Beta 1 regression)
* GUI: fixed a snapshot in the snapshots widget
* VMM: guest SMP fixes in rare cases
* VMM: fixed kernel panic with older Linux kernels, e.g. CentOS 5.3 (APIC; 3.0.12 + 3.1.0 Beta 1 regression)
* 3D support: fixed Final frame of Compiz animation not updated to the screen (public ticket #4653, partly fixed, needs more work)
* 2D/3D support, Windows: fix gl support test failure when VBox installation path contains spaces
* 2D support: fix saved state restore failure when 2D is active and used by the guest (Playing a Video)
* Creating a new VM sometimes failed (3.1.0 Beta 1 regression)
* VBoxManage clonehd was broken if the same image was cloned concurrently
* added VBoxManage usage information for Floppy/DVD images
* Linux Additions: properly disable the seamless mode if the guest doesn't support it
* Windows Additions: fixed high usage of VBoxService on Windows guests (3.1.0 Beta 1 regression)
* Windows Additions: VBox Credential Provider fixes
* Windows guests: fixed invisible mouse pointer when VM was restored from a saved state.
* VirtIO: performance improvements
* EFI: 32-bpp VGA driver was added.

Version 3.1.0 Beta 1 | Release Date: 2009-11-11 | Download
Version 3.1 will be a major update. The following major new features were added:
  • Teleportation (aka live migration); migrate a live VM session from one machine to another
  • VM states can now be restored from arbitrary snapshots instead of only the last one, and new snapshots can be taken from other snapshots as well (aka branched snapshots)
  • 2D video acceleration for Windows guests; use the host video hardware for overlay stretching and colour conversion
  • The network attachment type can be changed while a VM is running
  • Experimental USB support for OpenSolaris hosts making use of the latest USB enhancements in Solaris Nevada 124 and higher.
  • Significant performance improvements for PAE and AMD64 guests (VT-x and AMD-V only; normal (non-nested) paging)
  • Experimental support for EFI (Extended Firmware Interface)
  • VirtIO network device support

In addition, the following items were fixed and/or added:
  • VMM: reduced IO-APIC overhead for 32 bits Windows NT/2000/XP/2003 guests; requires 64 bits support (VT-x only; bug #4392)
  • VMM: fixed double timer interrupt delivery on old Linux kernels using IO-APIC (caused guest time to run at double speed; bug #3135)
  • VMM: reinit VT-x and AMD-V after host suspend or hibernate; some BIOSes forget this (Windows hosts only; bug #5421)
  • GUI: prevent starting a VM with a single mouse click (bug #2676)
  • 3D support: major performance improvement in VBO processing
  • 3D support: added GL_EXT_framebuffer_object, GL_EXT_compiled_vertex_array support
  • 3D support: fix crashes in FarCry, SecondLife, Call of Duty, Unreal Tournament, Eve Online (bugs #2801, #2791)
  • 3D support: fix graphics corruption in World of Warcraft (#2816)
  • iSCSI: support iSCSI targets with more than 2TiB capacity
  • VRDP: fixed occasional VRDP server crash (bug #5424)
  • Network: fixed the E1000 emulation for QNX (and probably other) guests (bug #3206)
  • Network: even if the virtual network cable was disconnected, some guests were able to send / receive packets (E1000; bug #5366)
  • Network: even if the virtual network cable was disconnected, the PCNet card received some spurious packets which might confuse the guest (bug #4496)
  • VMDK: fixed handling of split image variants
  • VHD: fixed incompatibility with Hyper-V
  • OVF: create manifest files on export and verify the content of an optional manifest file on import
  • X11 based hosts: allow the user to specify their own scan code layout (bug #2302)
  • Mac OS X hosts: don't auto show the menu and dock in fullscreen (#bug 4866)
  • Solaris hosts: combined the kernel interface package into the VirtualBox main package
  • Solaris hosts: support for OpenSolaris Boomer architecture (with OSS audio backend).
  • Shared folders: fixed changing case of file names (bug #2520)
  • Shared folders: VBOXSVR is visible in Network folder (bug #4842)
  • Windows and Linux Additions: added balloon tip notifier if VirtualBox host version was updated and Additions are out of date
  • Solaris Additions: fixed as_pagelock() failed errors affecting guest properties (bug #5337)
  • Windows Additions: added automatic logon support for Windows Vista and Windows 7
  • Windows Additions: fix crash in seamless mode (contributed by Huihong Luo)
  • Linux Additions: added support for uninstalling the Linux Guest Additions (bug #4039)
  • SDK: added object-oriented web service bindings for PHP5
Version 3.0.10 | Release Date: 2009-10-29 | Download

This is a maintenance release. The following items were fixed and/or added:

VMM: guest SMP stability fixes
VMM: fixed guru meditation with nested paging and SMP guests (bug #5222)
VMM: changed VT-x/AMD-V usage to detect other active hypervisors; necessary for e.g. Windows 7 XP compatibility mode (Windows & Mac OS X hosts only; bug #4239)
VMM: guru meditation during SCO OpenServer installation and reboot (VT-x only; bug #5164)
VMM: fixed accessed bit handling in certain cases (bug #5248)
VMM: fixed VPID flushing (VT-x only)
VMM: fixed broken nested paging for 64 bits guests on 32 bits hosts (AMD-V only; bug #5285)
VMM: fixed loading of old saved states/snapshots (bug #3984)
Mac OS X hosts: fixed memory leaks (bug #5084)
Mac OS X hosts (Snow Leopard): fixed redraw problem in a dual screen setup (bug #4942)
Windows hosts: installer updates for Windows 7
Solaris hosts: out of memory handled incorrectly (bug #5241)
Solaris hosts: the previous fix for #5077 broke the DVD host support on Solaris 10 (VBox 3.0.8 regression)
Linux hosts: fixed module compilation against Linux 2.6.32rc4 and later
Guest Additions: fixed possible guest OS kernel memory exhaustion
Guest Additions: fixed stability issues with SMP guests
Windows Additions: fixed color depth issue with low resolution hosts, netbooks, etc. (bug #4935)
Windows Additions: fixed NO_MORE_FILES error when saving to shared folders (bug #4106)
Windows Additions: fixed subdirectory creation on shared folders (bug #4299)
Linux Additions: sendfile() returned -EOVERFLOW when executed on a shared folder (bug #2921)
Linux Additions: fixed incorrect disk usage value (non-Windows hosts only)
Linux installer: register the module sources at DKMS even if the package provides proper modules for the current running kernel
3D support: removed invalid OpenGL assertion (bug #5158)
Network: fixed the Am79C973 PCNet emulation for QNX (and probably other) guests (bug #3206)
VMDK: fix handling of split image variants
VHD: do not delay updating the footer when expanding the image to prevent image inconsistency
USB: stability fix for some USB 2.0 devices
GUI: added a search index to the .chm help file
GUI/Windows hosts: fixed CapsLock handling on French keyboards (bug #2025)
Shared clipboard/X11 hosts: fixed a crash when clipboard initialisation failed (bug #4987)

Version 3.0.8 | Release Date: 2009-10-06 | Download
No changes specified
Version 3.0.6 | Release Date: 2009-09-09 | Download

VirtualBox 3.0.6 (released 2009-09-09)

This is a maintenance release. The following items were fixed and/or added:

* VMM: fixed IO-APIC overhead for 32 bits Windows NT, 2000, XP and 2003 guests (AMD-V only; bug #4392)
* VMM: fixed a Guru meditation under certain circumstances when enabling a disabled device (bug #4510)
* VMM: fixed a Guru meditation when booting certain Arch Linux guests (software virtualization only; bug #2149)
* VMM: fixed hangs with 64 bits Solaris & OpenSolaris guests (bug #2258)
* VMM: fixed decreasing rdtsc values (AMD-V & VT-x only; bug #2869)
* VMM: small Solaris/OpenSolaris performance improvements (VT-x only)
* VMM: cpuid change to correct reported virtual CPU id in Linux
* VMM: NetBSD 5.0.1 CD hangs during boot (VT-x only; bug #3947)
* Solaris hosts: worked around an issue that caused the host to hang (bug #4486)
* Solaris hosts: fixed a rare host system deadlock when using bridged networking
* Solaris hosts: fixed a potential host system deadlock when CPUs were onlined or offlined
* Solaris hosts installer: added missing dependency for UTF-8 package (bug #4899)
* Linux hosts: don't crash on Linux PAE kernels < 2.6.11 (in particular RHEL/CentOS 4); disable VT-x on Linux kernels < 2.6.13 (bug #1842)
* Linux/Solaris hosts: correctly detect keyboards with fewer keys than usual (bug #4799)
* Mac OS X hosts: prevent password dialogs in 32 bits Snow Leopard
* Python WS: fixed issue with certain enumerations constants having wrong values in Python webservices bindings
* Python API: several threading and platform issues fixed
* Python shell: added exportVM command
* Python shell: various improvements and bugfixes
* Python shell: corrected detection of home directory in remote case
* OVF: fixed XML comment handling that could lead to parser errors
* Main: fixed a rare parsing problem with port numbers of USB device filters in machine settings XML
* Main: restrict guest RAM size to 1.5 GB (32 bits Windows hosts only)
* Main: fixed possible hang during guest reboot (bug #3792)
* GUI: fixed rare crash when removing the last disk from the media manager (bug #4795)
* VBoxManage: fixed guestproperty for Mac OS X hosts (bug #3806)
* VBoxManage: fixed setting guest properties with --flags or -flags
* Webservice: fixed a severe memory leak, at least on platforms using XPCOM
* Serial: fixed host mode (Solaris, Linux and Mac OS X hosts; bug #4672)
* VRDP: Remote USB Protocol version 3
* SATA: fixed hangs and BSODs introduced with 3.0.4 (bugs #4695, #4739, #4710)
* SATA: fixed a bug which prevented Windows 7 from detecting more than one hard disk
* SATA/SCSI: fixed rare random guest crashes and hangs
* SCSI: fixed problem with Fedora 11 refusing to boot after kernel update
* iSCSI: fix logging out when the target has dropped the connection, fix negotiation of simparameters, fix command resend when the connection was dropped, fix processing SCSI status for targets which do not use phase collapse
* BIOS: fixed a bug that caused the OS/2 boot manager to fail (2.1.0 regression, bug #3911)
* PulseAudio: don't hang during VM termination if the connection to the server was unexpectedly terminated (bug #3100)
* Mouse: fixed weird mouse behaviour with SMP (Solaris) guests (bug #4538)
* HostOnly Network: fixed failure in CreateHostOnlyNetworkInterface() on Linux (no GUID)
* HostOnly Network: fixed wrong DHCP server startup while hostonly interface bringup on Linux
* HostOnly Network: fixed incorrect factory and default MAC address on Solaris
* HostOnly Network: fixed the problem with listing host-only interfaces on Mac OS X when all physical interfaces are down (bugs #4698, #4790)
* DHCP: fixed a bug in the DHCP server where it allocated one IP address less than the configured range
* E1000: fixed receiving of multicast packets
* E1000: fixed up/down link notification after resuming a VM
* NAT: fixed ethernet address corruptions (bug #4839)
* NAT: fixed hangs, dropped packets and retransmission problems (bug #4343)
* Bridged Network: fixed packet queue issue which might cause DRIVER_POWER_STATE_FAILURE BSOD for Windows hosts (bug #4821)
* Windows Additions: fixed a bug in VBoxGINA which prevented selecting the right domain when logging in the first time
* Windows host installer: should now also work on unicode systems (like Korean, bug #3707)
* Windows host installer: check for sufficient disk space
* Shared clipboard: do not send zero-terminated text to X11 guests and hosts (bug #4712)
* Shared clipboard: use a less CPU intensive way of checking for new data on X11 guests and hosts (bug #4092)
* Guest Additions: do not hide the host mouse cursor when restoring a saved state (bug #4700)
* Windows guests: fixed issues with the display of the mouse cursor image (bugs #2603, #2660 and #4817)
* SUSE 11 guests: fixed Guest Additions installation (bug #4506)
* Guest Additions: support Fedora 12 Alpha guests (bugs #4731, #4733 and #4734)

Version 3.0.4 | Release Date: 2009-08-04 | Download
No changes specified
Version 3.0.2 | Release Date: 2009-07-10 | Download

VirtualBox 3.0.2 (released 2009-07-10)

This is a maintenance release. The following items were fixed and/or added:

* VMM: fixed network regressions (guest hangs during network IO) (bug #4343)
* VMM: guest SMP performance improvements
* VMM: fixed hangs and poor performance with Kaspersky Internet Security (VT-x/AMD-V only; bug #1778)
* VMM: fixed crashes when executing certain Linux guests (software virtualization only; bugs #2696 & #3868)
* ACPI: fixed Windows 2000 kernel hangs with IO-APIC enabled (bug #4348)
* APIC: fixed high idle load for certain Linux guests (3.0 regression)
* BIOS: properly handle Ctrl-Alt-Del in real mode
* iSCSI: fixed configuration parsing (bug #4236)
* OVF: fix potential confusion when exporting networks
* OVF: compatibility fix (bug #4452)
* NAT: fixed crashes under certain circumstances (bug #4330)
* 3D support: fixed dynamic linking on Solaris/OpenSolaris guests (bug #4399)
* 3D support: fixed incorrect context/window tracking for multithreaded apps
* Shared Folders: fixed loading from saved state (bug #1595)
* Shared Folders: host file permissions set to 0400 with Windows guest (bug #4381)
* X11 host and guest clipboard: fixed a number of issues, including bug #4380 and #4344
* X11 Additions: fixed some issues with seamless windows in X11 guests (bug #3727)
* Windows Additions: added VBoxServiceNT for NT4 guests (for time synchronization and guest properties)
* Windows Additions: fixed version lookup
* Linux hosts: workaround for buggy graphics drivers showing a black VM window on recent distributions (bug #4335)
* Linux hosts: fixed typo in kernel module startup script (bug #4388)
* Installer: support Pardus Linux
* Solaris hosts: several installer fixes
* Solaris host: fixed a preemption issue causing VMs to never start on Solaris 10 (bug #4328).
* Solaris guest: fixed mouse integration for OpenSolaris 2009.06 (bug #4365)
* Windows hosts: fixed high CPU usage after resuming the host (bug #2978)
* OVF: accept ovf:/disk/ specifiers with a single slash in addition to ovf://disk/ (bug #4452)
* Fixed a settings file conversion bug which sometimes caused hardware acceleration to be enabled for virtual machines that had no explicit configuration in the XML.

Version 3.0 | Release Date: 2009-06-30 | Download

VirtualBox 3.0.0 (released 2009-06-30)

This version is a major update. The following major new features were added:

Guest SMP with up to 32 virtual CPUs (VT-x and AMD-V only; see chapter 3.7.2.2 of the user manual)
Windows guests: ability to use Direct3D 8/9 applications / games (experimental; see chapter 4.8 of the user manual)
Support for OpenGL 2.0 for Windows, Linux and Solaris guests
In addition, the following items were fixed and/or added:

Solaris hosts: allow suspend/resume on the host when a VM is running (bug #3826)
Solaris hosts: loosen the restriction for contiguous physical memory under certain conditions
Mac OS X hosts: fixed guest PAE
Linux hosts: kernel module compile fixes for 2.6.31 (bug #4264)
VMM: fixed occasional guru meditation when loading a saved state (VT-x only)
VMM: eliminated IO-APIC overhead with 32 bits guests (VT-x only, some Intel CPUs don’t support this feature (most do); bug #638)
VMM: fixed 64 bits CentOS guest hangs during early boot (AMD-V only; bug #3927)
VMM: performance improvements for certain PAE guests (e.g. Linux 2.6.29+ kernels)
VMM: some Windows guests detected a completely wrong CPU frequency (bug #2227)
VMM: fixed hanging and unkillable VM processes (bug #4040)
VMM: fixed random infrequent guest crashes due to XMM state corruption (Win64 hosts only)
VMM: performance improvements for network I/O (VT-x/AMD-V only)
GUI: added mini toolbar for fullscreen and seamless mode (Thanks to Huihong Luo)
GUI: redesigned settings dialogs
GUI: allow to create/remove more than one host-only network adapters (non Windows hosts)
GUI: display estimated time for long running operations (e.g. OVF import/export)
GUI: fixed rare hangs when open the OVF import/export wizards (bug #4157)
3D support: fixed VM crashes for client applications using incorrect OpenGL states
3D support: fixed memory corruption when querying for supported texture compression formats
3D support: fixed incorrect rendering of glDrawRangeElements
3D support: fixed memory leak when using VBOs
3D support: fixed glew library detection
3D support: fixed random textures corruption
VRDP: support Windows 7 RDP client
Networking: fixed another problem with TX checksum offloading with Linux kernels up to version 2.6.18
NAT: fixed “open ports on virtual router 10.0.2.2 - 513, 514” (forum)
NAT: allow to configure socket and internal parameters
NAT: allow to bind sockets to specific interface
PXE boot: significant performance increase (VT-x/AMD-V only)
VHD: properly write empty sectors when cloning of VHD images (bug #4080)
VHD: fixed crash when discarding snapshots of a VHD image
VHD: fixed access beyond the block bitmap which could lead to arbitrary crashes
VBoxManage: fixed incorrect partition table processing when creating VMDK files giving raw partition access (bug #3510)
VBoxManage: support cloning to existing image file
OVF: several OVF 1.0 compatibility fixes
OVF: fixed exporting of disk images when multiple virtual machines are exported at once
Virtual mouse device: eliminated micro-movements of the virtual mouse which were confusing some applications (bug #3782)
Shared Folders: sometimes a file was created using the wrong permissions (2.2.0 regression; bug #3785)
Shared Folders: allow to change file attributes from Linux guests and use the correct file mode when creating files
Shared Folders: some content was incorrectly written under certain conditions (bug #1187)
Shared Folders: fixed incorrect file timestamps, when using Windows guest on a Linux host (bug #3404)
X11 clipboard: fix duplicate end of lines (bug #4270)
X11 guests: a number of shared clipboard fixes
Linux guests: Guest Additions support for SUSE Linux Enterprise Desktop 11
Linux guests: new daemon vboxadd-service to handle time synchronization and guest property lookup
Linux guests: implemented guest properties (OS info, logged in users, basic network information)
Windows host installer: VirtualBox Python API can now be installed automatically (requires Python and Win32 Extensions installed)
USB: Support for high-speed isochronous endpoints has been added. In addition, read-ahead buffering is performed for input endpoints (currently Linux hosts only). This should allow additional devices to work, notably webcams (bug #242).
USB: fixed error handling for some USB dongles
Web service: fixed inability to handle NULL pointers for object arguments, which are valid values for a lot of APIs, in both the raw and the object-oriented web service.
Web service: object-oriented bindings for JAX-WS did not exhibit interface inheritance correctly, fixed
Web service: added support for IDisplay and IGuest interfaces, which were previously unavailable
Registration dialog uses Sun Online accounts now

Version 2.2.4 | Release Date: 2009-05-29 | Download

This is a maintenance release. The following items were fixed and/or added:

* Windows Installer: fixed a potential hang during installation
* Windows Installer: fixed several problems (bug #3892)
* Solaris hosts: make it work with Solaris build 114 or later (bug #3981)
* Solaris hosts: fixed a bug serial port character handling found during loopback (bug #3120)
* Linux hosts: adapted vboxdrv.sh to the latest changes in VBoxManage list runningvms (bug #4034)
* Windows hosts: fixed a crash caused by host-only/bridged networking
* Mac OS X hosts: fixed access to host DVD with passthrough disabled (bug #4077)
* Guest Additions: fixed problems with KDE 4 not recognizing mouse clicks
* Windows Additions: fixed incorrect 8-bit guest color depth in Windows 7 guests
* GUI: warn if VT-x/AMD-V could not be enabled for guests that require this setting (bug #4055)
* VMM: fixed occassional crash due to insuffient memory
* VMM: fixed hanging 64 bits Solaris guests
* VMM: restore from a saved state occassionally failed (bugs #3984 and #2742)
* Clipboard: fixed a deadlock while shutting down the shared clipboard on X11 hosts (bug #4020)
* OVF: fixed potential hang during import
* OVF: fixed potential crashes during import/export on Win64 hosts
* VBoxManage modifyhd --compact: fixed bug which could lead to crashes and image corruption (bug #3864)
* VBoxManage metrics collect: now flushes the output stream.
* VHD: made VBoxManage internalcommands sethduuid work for .vhd files (bug #3443)
* VHD: some .vhd files could not be cloned (bug #4080)
* VMDK: fixed creating snapshots
* NAT: improvement of TCP connection establisment (bug #2987)
* NAT: fixed order of DNS servers in DHCP lease (bug #4091)
* NAT: fixed DHCP lease for multiple name servers (bug #3692)
* NAT: fixed a potential segfault if the host lost its connectivity (bug #3964)
* Shared Folders: deny access to parent directories on Windows hosts (bug #4090)
* Shared Folders: make rm/rmdir work with Solaris guests on Windows hosts
* Networking: fixed the problem with blocked receiving thread when a broadcast packet arrives too early to be handled by uninitialized e1000 adapter.
* Networking: fixed the problem that caused host freezes/crashes when using bridged mode with host’s interface having RX checksum offloading on (bug #3926 and related). Fixes problems with TX offloading as well (bug #3870)
* PXE boot: Added support for PRO/1000 MT Server adapter.
* Python bindings: fixed keyword conflict
* SCSI: fixed occasional crashes on Win64
* Serial: allow to redirect the serial port to a raw file (bug #1023)
* VRDP: fixed a rare incorrect screen update

Version 2.2.2 | Release Date: 2009-04-28 | Download
No changes specified
Version 2.2.0 | Release Date: 2009-04-08 | Download

* OVF (Open Virtualization Format) appliance import and export (see chapter 3.8, Importing and exporting virtual machines, User Manual page 55)
* Host-only networking mode (see chapter 6.7, Host-only networking, User Manual page 88)
* Hypervisor optimizations with significant performance gains for high context switching rates
* Raised the memory limit for VMs on 64-bit hosts to 16GB
* VT-x/AMD-V are enabled by default for newly created virtual machines
* USB (OHCI & EHCI) is enabled by default for newly created virtual machines (Qt GUI only)
* Experimental USB support for OpenSolaris hosts
* Shared folders for Solaris and OpenSolaris guests
* OpenGL 3D acceleration for Linux and Solaris guests (see chapter 4.8, Hardware 3D acceleration (OpenGL), User Manual page 70)
* Added C API in addition to C++, Java, Python and Web Services

Version 2.1.4 | Release Date: 2009-02-16 | Download
  • Windows hosts: fixed host crashes/hangs on certain 32 bits Windows systems when running Linux guests (bugs #1606, #2269, #2763)
  • Windows hosts: Fixed network component BSOD issue (bugs #3168, #2916)
  • Windows hosts: Fixed installation issues (bugs #2517, #1730, #3130)
  • Linux hosts: fixed occasional kernel oopses (bug #2556)
  • Linux hosts: fixed module dependency for shipped modules (bug #3115)
  • Linux hosts: moved the udev rules for USB forward so that they don’t override existing system rules (bug #3143)
  • Linux hosts: fixed the issue with guest not being able to communicate with each other when attached via TAP interfaces (bug #3215)
  • Linux hosts: give up probing for USB gracefully if dbus or hal are not available (bug #3136)
  • Linux hosts: fixed warnings in installer when SELinux was disabled (bug #3098)
  • Linux hosts: VirtualBox sometimes failed to start if it had been started using sudo previously (bug #3270)
  • Solaris hosts: fixed high CPU load while running many guests in parallel
  • Solaris hosts: fixed inability to start more than 128 VMs
  • VMM: fixed performance regression for Windows guests (bug #3172)
  • VMM: ignore CPU stepping when restoring a saved state/snapshot
  • REM: fixed inability to use gdb to debug programs in Linux guests with software virtualization (bug #3245)
  • GUI: fixed dead key handling on Solaris hosts (bug #3256)
  • GUI: in the shutdown dialog, disable the action send the shutdown signal if the guest is currently not using ACPI
  • GUI: suppress additional key release events sent by X11 hosts when keys are auto-repeated (bug #1296)
  • API: restore case insensitive OS type name lookup (bug #3087)
  • VBoxHeadless: really don’t start X11 services (clipboard service, 3D acceleration; Solaris & Darwin hosts only; bug #3199)
  • NAT: fixed occasional crashes when the guest is doing traceroute (non-Windows hosts; bug #3200)
  • NAT: fixed crashes under high load (bug #3110)
  • NAT: fixed truncated downloads (Windows hosts only, bug #3257)
  • NAT: don’t intercept TFTP packages with a destination address different from the builtin TFTP server (bug #3112)
  • USB: several fixes for USB passthrough on Linux hosts
  • USB: reduced host CPU utilization if EHCI is active
  • VRDP: fixed VRDP server black screen after a client reconnect (bug #1989)
  • VRDP: modified rdesktop client (rdesktop-vrdp) now uses NumLock state synchronization (bug #3253)
  • LsiLogic: make FreeBSD guests work (bug #3174)
  • ATA: fixed deadlock when pausing VM due to problems with the virtual disk (e.g. disk full, iSCSI target unavailable)
  • iSCSI: fixed possible crash when pausing the VM
  • 3D support: added missing GL_MAX_TEXTURE_COORDS_ARB (bug #3246)
  • Windows Additions: fixed ERROR (e0000101) error during installation (bug #1923)
  • Windows Additions: fixed Windows Explorer hang when browsing shared folders with 64 bit guests (bug #2225)
  • Windows Additions: fixed guest screen distortions during a video mode change
  • Windows Additions: fixed the Network drive not connected message for mapped shared folders drives after the guest startup (bug #3157)
  • Linux Additions: fixed occasional file corruption when writing files in O_APPEND mode to a shared folder (bug #2844)
  • Linux Additions: the mouse driver was not properly set up on X.Org release candidates (bug #3212)
  • Linux Additions: fixed installer to work with openSUSE 11.1 (bug #3213)
  • Linux Additions: disable dynamic resizing if the X server is configured for fixed resolutions
  • Linux/Solaris Additions: handle virtual resolutions properly which are larger than the actual guest resolution (bug #3096)
Version 2.1.2 | Release Date: 2009-01-21 | Download

This is a maintenance release. The following items were fixed and/or added:

* USB: improved support for recent Linux hosts
* VMM: fixed guru meditation for PAE guests on non-PAE hosts (AMD-V)
* VMM: fixed guru meditation on Mac OS X hosts when using VT-x
* VMM: allow running up to 1023 VMs on 64-bit hosts (used to be 127)
* VMM: several FreeBSD guest related fixes (bugs #2342, #2341, #2761)
* VMM: fixed guru meditation when installing Suse Enterprise Server 10U2 (VT-x only; bug #3039)
* VMM: fixed guru meditation when booting Novell Netware 4.11 (VT-x only; bug #2898)
* VMM: fixed VERR_ADDRESS_TOO_BIG error on some Mac OS X systems when starting a VM
* VMM: clear MSR_K6_EFER_SVME after probing for AMD-V (bug #3058)
* VMM: fixed guru meditation during Windows 7 boot with more than 2 GB guest RAM (VT-x, nested paging only)
* VMM: fixed hang during OS/2 MCP2 boot (AMD-V and VT-x only)
* VMM: fixed loop during OpenBSD 4.0 boot (VT-x only)
* VMM: fixed random crashes related to FPU/XMM with 64 bits guests on 32 bits hosts
* VMM: fixed occasional XMM state corruption with 64 bits guests
* VMM: speed improvements for real mode and protected mode without paging (software virtualization only)
* GUI: raised the RAM limit for new VMs to 75% of the host memory
* GUI: added Windows 7 as operating system type
* VBoxSDL: fixed -fixed fixedmode parameter (bug #3067)
* Clipboard: stability fixes (Linux and Solaris hosts only, bug #2675 and #3003)
* 3D support: fixed VM crashes for certain guest applications (bugs #2781, #2797, #2972, #3089)
* LsiLogic: improved support for Windows guests (still experimental)
* VGA: fixed a 2.1.0 regression where guest screen resize events were not properly handled (bug #2783)
* VGA: significant performance improvements when using VT-x/AMD-V on Mac OS X hosts
* VGA: better handling for VRAM offset changes (fixes GRUB2 and Dos DOOM display issues)
* VGA: custom VESA modes with invalid widths are now rounded up to correct ones (bug #2895)
* IDE: fixed ATAPI passthrough support (Linux hosts only; bug #2795)
* Networking: fixed kernel panics due to NULL pointer dereference in Linux kernels < 2.6.20 (Linux hosts only; bug #2827)
* Networking: fixed intermittend BSODs when using the new host interface (Windows hosts only; bugs #2832, #2937, #2929)
* Networking: fixed several issues with displaying hostif NICs in the GUI (Windows hosts only; bugs 2814, #2842)
* Networking: fixed the issue with displaying hostif NICs without assigned IP addresses (Linux hosts only; bug #2780)
* Networking: fixed the issue with sent packets coming back to internal network when using hostif (Linux hosts only; bug #3056).
* NAT: fixed port forwarding (Windows hosts only; bug #2808)
* NAT: fixed booting from the builtin TFTP server (bug #1959)
* NAT: fixed occasional crashes (bug #2709)
* SATA: vendor product data (VPD) is now configurable
* SATA: raw disk partitions were not recognized (2.1.0 regression, Windows host only, bug #2778)
* SATA: fixed timeouts in the guest when using raw VMDK files (Linux host only, bug #2796)
* SATA: huge speed up during certain I/O operations like formatting a drive
* SATA/IDE: fixed possible crash/errors during VM shutdown
* VRDP: fixed loading of libpam.so.1 from the host (Solaris hosts only)
* VRDP: fixed RDP client disconnects
* VRDP: fixed VRDP server misbehavior after a broken client connection
* VBoxManage showvminfo: fixed assertion for running VMs (bug #2773)
* VBoxManage convertfromraw: added parameter checking and made it default to creating VDI files; fixed and documented format parameter (bug #2776)
* VBoxManage clonehd: fixed garbled output image when creating VDI files (bug #2813)
* VBoxManage guestproperty: fixed property enumeration (incorrect parameters/exception)
* VHD: fixed error when attaching certain container files (bug #2768)
* Solaris hosts: added support for serial ports (bug #1849)
* Solaris hosts: fix for Japanese keyboards (bug #2847)
* Solaris hosts: 32-bit and 64-bit versions now available as a single, unified package
* Linux hosts: don’t depend on libcap1 anymore (bug #2859)
* Linux hosts: compile fixes for 2.6.29-rc1
* Linux hosts: don’t drop any capability if the VM was started by root (2.1.0 regression)
* Mac OS X hosts: save the state of running or paused VMs when the host machine’s battery reaches critical level
* Mac OS X hosts: improved window resizing of the VM window
* Mac OS X hosts: added GUI option to disable the dock icon realtime preview in the GUI to decrease the host CPU load when the guest is doing 3D
* Mac OS X hosts: polished realtime preview dock icon
* Windows Additions: fixed guest property and logging OS type detection for Windows 2008 and Windows 7 Beta
* Windows Additions: added support for Windows 7 Beta (bugs #2995, #3015)
* Windows Additions: fixed Windows 2000 guest freeze when accessing files on shared folders (bug #2764)
* Windows Additions: fixed Ctrl-Alt-Del handling when using VBoxGINA
* Windows Additions Installer: Added /extract switch to only extract (not install) the files to a directory (can be specified with /D=path)
* Linux installer and Additions: added support for the Linux From Scratch distribution (bug #1587) and recent Gentoo versions (bug #2938)
* Additions: added experimental support for X.Org Server 1.6 RC on Linux guests
* Linux Additions: fixed bug which prevented to properly set fmode on mapped shared folders (bug #1776)
* Linux Additions: fixed appending of files on shared folders (bug #1612)
* Linux Additions: ignore noauto option when mounting a shared folder (bug #2498)
* Linux Additions: fixed a driver issue preventing X11 from compiling keymaps (bug #2793 and #2905)
* X11 Additions: workaround in the mouse driver for a server crash when the driver is loaded manually (bug #2397)

Version 2.1.0 | Release Date: 2008-12-17 | Download

This version is a major update. The following major new features were added:

* Support for hardware virtualization (VT-x and AMD-V) on Mac OS X hosts
* Support for 64-bit guests on 32-bit host operating systems (experimental; see user manual, chapter 1.6, 64-bit guests, page 16)
* Added support for Intel Nehalem virtualization enhancements (EPT and VPID; see user manual, chapter 1.2, Software vs. hardware virtualization (VT-x and AMD-V), page 10))
* Experimental 3D acceleration via OpenGL (see user manual, chapter 4.8, Hardware 3D acceleration (OpenGL), page 66)
* Experimental LsiLogic and BusLogic SCSI controllers (see user manual, chapter 5.1, Hard disk controllers: IDE, SATA (AHCI), SCSI, page 70)
* Full VMDK/VHD support including snapshots (see user manual, chapter 5.2, Disk image files (VDI, VMDK, VHD), page 72)
* New NAT engine with significantly better performance, reliability and ICMP echo (ping) support (bugs #1046, #2438, #2223, #1247)
* New Host Interface Networking implementations for Windows and Linux hosts with easier setup (replaces TUN/TAP on Linux and manual bridging on Windows)

In addition, the following items were fixed and/or added:

* VMM: significant performance improvements for VT-x (real mode execution)
* VMM: support for hardware breakpoints (VT-x and AMD-V only; bug #477)
* VMM: VGA performance improvements for VT-x and AMD-V
* VMM: Solaris and OpenSolaris guest performance improvements for AMD-V (Barcelona family CPUs only)
* VMM: fixed guru meditation while running the Dr. Web virus scanner (software virtualization only; bug #1439)
* VMM: deactivate VT-x and AMD-V when the host machine goes into suspend mode; reactivate when the host machine resumes (Windows, Mac OS X & Linux hosts; bug #1660)
* VMM: fixed guest hangs when restoring VT-x or AMD-V saved states/snapshots
* VMM: fixed guru meditation when executing a one byte debug instruction (VT-x only; bug #2617)
* VMM: fixed guru meditation for PAE guests on non-PAE hosts (VT-x)
* VMM: disallow mixing of software and hardware virtualization execution in general (bug #2404)
* VMM: fixed black screen when booting OS/2 1.x (AMD-V only)
* GUI: pause running VMs when the host machine goes into suspend mode (Windows & Mac OS X hosts)
* GUI: resume previously paused VMs when the host machine resumes after suspend (Windows & Mac OS X hosts)
* GUI: save the state of running or paused VMs when the host machine’s battery reaches critical level (Windows hosts)
* GUI: properly restore the position of the selector window when running on the compiz window manager
* GUI: properly restore the VM in seamless mode (2.0 regression)
* GUI: warn user about non optimal memory settings
* GUI: structure operating system list according to family and version for improved usability
* GUI: predefined settings for QNX guests
* IDE: improved ATAPI passthrough support
* Networking: added support for up to 8 Ethernet adapters per VM
* Networking: fixed issue where a VM could lose connectivity after a reboot
* iSCSI: allow snapshot/diff creation using local VDI file
* iSCSI: improved interoperability with iSCSI targets
* Graphics: fixed handling of a guest video memory which is not a power of two (bug #2724)
* VBoxManage: fixed bug which prevented setting up the serial port for direct device access.
* VBoxManage: added support for VMDK and VHD image creation
* VBoxManage: added support for image conversion (VDI/VMDK/VHD/RAW)
* Solaris hosts: added IPv6 support between host and guest when using host interface networking
* Mac OS X hosts: added ACPI host power status reporting
* API: redesigned storage model with better generalization
* API: allow attaching a hard disk to more than one VM at a time
* API: added methods to return network configuration information of the host system
* Shared Folders: performance and stability fixes for Windows guests (Microsoft Office Applications)

Version 2.0.4 | Release Date: 2008-10-23 | Download
No changes specified
Version 2.0.2 | Release Date: 2008-09-11 | Download

VirtualBox 2.0.2 (released 2008-09-12)

This is a maintenance release. The following items were fixed and/or added:

VMM: fixed inability to run more than one VM in parallel (AMD-V on CPUs with erratum 170 only; bug #2167)
VMM: VT-x stability fixes (bug #2179 and others)
VMM: fixed Linux 2.6.26+ kernel crashes (used by Ubuntu 8.10 Alpha, Fedora 10 Alpha; bug #1875)
VMM: fixed 64 bits Linux 2.6.26 kernel crashes (Debian)
VMM: fixed Vista (32 bits) guest crash during boot when PAE and NX are enabled (applied to 64 bits hosts with VT-x enabled only)
VMM: fixed OS/2 guest crashes during boot (AMD-V; bug #2132)
GUI: fixed crash when trying to release an inaccessible image in the virtual disk manager
GUI: fixed invalid error message for a changed snapshot path even if that path wasn't changed (bug #2064)
GUI: fixed crash when creating a new hard disk image (bug #2060)
GUI: fixed crash when adding a hard disk in the VM settings (bug #2081)
GUI: fixed a bug where VirtualBox isn't working with the new QGtkStyle plugin (bug #2066)
GUI: fixed VM close dialog in seamless mode (Mac OS X hosts only; bug #2067)
GUI: fixed standard menu entries for NLS versions (Mac OS X hosts only)
GUI: disable the VT-x/AMD-V setting when it's not supported by the CPU (or on Mac OS X hosts)
VBoxManage: fixed crash during internalcommands createrawvmdk (bug #2184)
VBoxManage: fixed output of snapshot showvminfo (bug #698)
Guest properties: added information about guest network interfaces (Windows guests only)
Shared Folders: fixed regression that caused Windows guest crashes (bug #2055)
API: fixed number of installed CPUs (Solaris hosts only)
VRDP: allow a client to reconnect to an existing session on the VRDP server by dropping the existing connection (configurable and disabled by default; only relevant when multiconnection mode is disabled)
VRDP: fixed an image repaint problem
Linux hosts: fixed bug in vboxdrv.ko that could corrupt kernel memory and panic the kernel (bug #2078)
Linux hosts: compile fixes for kernel module on Linux 2.6.27
Mac OS X hosts: added Python support
Additions: fixed a possible hang in HGCM communication after a VM reboot
Windows additions: added support for Windows XP 64 bits (bug #2117)
Linux additions: deactivate dynamic resizing on Linux guests with buggy X servers
Linux additions: support Ubuntu 8.10 guests and Fedora 9 guests (dynamic resizing disabled for the latter) (bug #1854)
Linux additions: added installer check for the system architecture
Linux additions: fixed Xorg modules path for some Linux distributions (bug #2128)
VMDK: be more liberal with ambiguous parts of the format specification and accept more format variants (bug #2062)
VHD: fixed a bug in the VHD backend which resulted in reading the wrong data (bug #2085)
Solaris hosts: fixed kernel panic on certain machines when starting VMs with host interface networking (bug #2183)
Solaris hosts: fixed inability to access NFS shares on the host when host interface networking was enabled
Solaris hosts: installer now detects and reports when installing under the wrong architecture
Solaris hosts: fixed security hardening that prevented starting VMs from non-global zones even as root (bug #1948)
Solaris additions: combined the 32 bit and 64 bit additions installer into a single package
Mac OS X hosts: experimental support for attaching a real serial port to the guest

Version 2.0.0 | Release Date: 2008-09-03 | Download

VirtualBox 2.0.0 (released 2008-09-04)

This version is a major update. The following major new features were added:

64 bits guest support (64 bits host only)
New native Leopard user interface on Mac OS X hosts
The GUI was converted from Qt3 to Qt4 with many visual improvements
New-version notifier
Guest property information interface
Host Interface Networking on Mac OS X hosts
New Host Interface Networking on Solaris hosts
Support for Nested Paging on modern AMD CPUs (major performance gain)
Framework for collecting performance and resource usage data (metrics)
Added SATA asynchronous IO (NCQ: Native Command Queuing) when accessing raw disks/partitions (major performance gain)
Clipboard integration for OS/2 Guests
Created separate SDK component featuring a new Python programming interface on Linux and Solaris hosts
Support for VHD disk images
In addition, the following items were fixed and/or added:

VMM: VT-x fixes
AHCI/SATA: improved performance
GUI: keyboard fixes
Linux installer: properly uninstall the package even if unregistering the DKMS module fails
Linux additions: the guest screen resolution is properly restored
Network: added support for jumbo frames (> 1536 bytes)
Shared Folders: fixed guest crash with Windows Media Player 11
Mac OS X: Ctrl+Left mouse click doesn’t simulate a right mouse click in the guest anymore. Use Hostkey+Left for a right mouse click emulation. (bug #1766)

Version 1.6.4 | Release Date: 2008-07-29 | Download

- AMD-V, VT-x: stability fixes
- Shared Folders: fixed host crash (Solaris host only, bugs #1336, #1646)
- Shared Folders: fixed BSOD when debugging with Visual Studio (bug #1627)
- Shared Folders: fixed BSOD when compiling on a shared folder (bug #1683)
- Shared Folders: several fixes/stability improvements
- SATA: fixed a race that could cause an occasional Windows guest system hang
- SATA: fixed spurious BIOS log messages
- Networking: fixed NIC tracing with NAT interfaces (bug #1790)
- USB: fixed crash under certain conditions when unplugging a USB device (bug #1295)
- Settings: fixed bug when converting 1.5.x settings
- RDP: fixed enabling the RDP server during runtime
- RDP: properly detect the rdesktop 1.6.0 RDP client
- RDP: fixed RDP crash (bug #1521)
- RDP: updated modified rdesktop client to version 1.6.0
- GUI: NLS improvements
- BIOS: added SMBIOS header to make Solaris and Vista recognize the DMI data
- ACPI: properly hide a disabled floppy controller
- VMM: small fixes to protected mode without paging
- VMDK: fixed handling of .vmdk images without UUIDs
- Windows hosts: fixed driver parameter validation issue in VBoxDrv.sys that could allow an attacker on the host to crash the system
- Windows hosts: installer now contains web service examples mentioned in the manual
- Linux hosts: properly deregister the Linux kernel module before uninstalling a Linux deb/rpm package
- Linux hosts: kernel module works now with Linux 2.6.27
- Linux hosts: fixed a typo in the vboxnet setup script for host network interfaces (bug #1714)
- Linux hosts: fixed usage of tar in installer (bug #1767)
- Linux hosts: fixed long guest shutdown time when serial port is enabled
- Solaris hosts: refuse to install in Sun xVM hypervisor dom0
- Solaris hosts: accept Solaris raw disks when for raw disk access
- Windows additions: made installation of shared folders more robust
- Windows additions: improved installation
- Linux additions: accept every user-defined guest video mode in /etc/X11/xorg.conf
- Linux additions: fixed startup order for recent Linux distributions (e.g. openSUSE 11)

Version 1.6.2 | Release Date: 2008-06-07 | Download

GUI: fixed a bug which prevented to add more than one SATA drive from the GUI
GUI: fixed a regression introduced in 1.6.0: the fullscreen mode was left on every guest video mode switch
GUI: fixed several minor issues
Networking: fixed a host interface networking regression introduced in 1.6.0
VMM: fixed starting of VMs with AMD-V enabled
VMM: massive performance enhancements for AMD-V
VMM: stability improvements for AMD-V on Windows hosts
VMM: correctly detect AMD CPUs with erratum 170 (AMD-V)
VMM: detect inconsistent timestamp counters on certain AMD Phenom CPUs (Windows host only)
VMM: fixed KVM check (Linux hosts only) XPCOM: fixed several races
VMM: fixed a regression introduced in 1.6.0: Windows stuck during installation
SATA: improved performance with Vista guests
SATA: fixed statistics counter
Shared Folders: several fixes (iTunes download, speed up browsing)
ATA/IDE: fixed boot from CDROM if a medium was added while the boot menu was active
Networking: provide an Intel PRO/1000 T Server (82543GC) network device emulation which is recognized by Windows XP guests
Networking: fixes for the E1000 emulation (don't crash if not attached, fixed a bug in the statistics counter implementation)
NAT: don't crash if the guest sent a DHCPRELEASE message with an invalid IP address
NAT: fixed ARP reply for the NAT gateway and for the NAT name server if the guest IP range was changed
Internal Networking: fixed shutdown if more than two VMs are connected to the same network
BIOS: allow to change the DMI informatiton (see chapter 9.13, Con'guring the BIOS DMI information, page 125)
RTC: fixed UIP emulation to prevent jumping of time in Solaris guests
Windows host: VirtualBox installation directory corrected for 64 bits Windows
Windows host: fixed VBoxVRDP.exe symlink
Windows host: solved locking problems in raw partition VMDK support
Windows host: fixed stability during high system load (page fault in KeQueryActiveProcessors)
MacOS X host: fixed crashes under certain conditions
Shared Folders: limited users without admin rights now also can use Shared Folders on Windows guests
Linux hosts: fixed default runlevel for the kernel module helper script
Solaris hosts: enabled support for VT-x and AMD-V
Solaris hosts: dynamic loading of libdlpi fixes a problem where Solaris 10 was not able to start a VM
Linux additions: fixed runlevels for kernel module helper scripts
Linux additions: compatibility fixes with Linux 2.6.26
Linux additions: fixed occasional guest kernel crash during unload of the vboxadd guest kernel module

Version 1.6 | Release Date: 2008-05-01 | Download

The first major release since being acquired by Sun Microsystems is now available. Version 1.6 has new Mac and Solaris host platform support, new high performance virtual devices, improved scalability and Web Services. Get it now, Get it

Version 1.5.6 | Release Date: 2008-04-03 | Download
No changes specified
Version 1.5.51 (beta 3) | Release Date: 2008-02-05 | Download

Leopard compatability

Version 1.4.1 Beta 2 | Release Date: 2007-12-18 | Download

corrected version name.

Version 1.4.1-beta2 | Release Date: 2007-12-18 | Download

name

Version 1.4.1 | Release Date: 2007-07-23 | Download
No changes specified
Version Beta 2 | Release Date: 2007-07-18 | Download
innotek VirtualBox is a general-purpose full virtualizer for x86 hardware. Targeted at server, desktop and embedded use, it is now the only professional-quality virtualization solution that is also Open Source Software. Some of the features of VirtualBox are: Modularity. VirtualBox has an extremely modular design with well-defined internal programming interfaces and a client/server design. This makes it easy to control it from several interfaces at once: for example, you can start a virtual machine in a typical virtual machine GUI and then control that machine from the command line, or possibly remotely. VirtualBox also comes with a full Software Development Kit: even though it is Open Source Software, you don't have to hack the source to write a new interface for VirtualBox. Virtual machine descriptions in XML. The configuration settings of virtual machines are stored entirely in XML and are independent of the local machines. Virtual machine definitions can therefore easily be ported to other computers. Guest Additions for Windows and Linux. VirtualBox has special software that can be installed inside Windows and Linux virtual machines to improve performance and make integration much more seamless. Among the features provided by these Guest Additions are mouse pointer integration and arbitrary screen solutions (e.g. by resizing the guest window). A number of extra features are available with the full VirtualBox release only (see the "Editions" page for details): Virtual USB Controllers. VirtualBox implements a virtual USB controller and allows you to connect arbitrary USB devices to your virtual machines without having to install device specific drivers on the host. Remote Desktop Protocol. Unlike any other virtualization software, VirtualBox fully supports the standard Remote Desktop Protocol (RDP). A virtual machine can act as an RDP server, allowing you to "run" the virtual machine remotely on some thin client that merely displays the RDP data. USB over RDP. With this unique feature, a virtual machine that acts as an RDP server can still access arbitrary USB devices that are connected on the RDP client. This way, a powerful server machine can virtualize a lot of thin clients that merely need to display RDP data and have USB devices plugged in. Shared folders. Like many other virtualization solutions, for easy data exchange between hosts and guests, VirtualBox allows for declaring certain host directories as "shared folders", which can then be accessed from within virtual machines.