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VirtualBox 4.3 Beta 1 released

PostPosted: 21. Aug 2013, 10:40
by frank
Please do NOT use this VirtualBox Beta release on production machines. A VirtualBox Beta release should be considered a bleeding-edge release meant for early evaluation and testing purposes.

You can download the binaries here.

Please do NOT open bug reports at but use our VirtualBox Beta Feedback forum to report any problems with the Beta. Please concentrate on reporting regressions since VirtualBox 4.2.16.

VirtualBox 4.3 will be a new major release. The following major new features were added:
  • VMM: major rewrite of the VT-x code including many bug fixes and performance improvements (for example bug #9659)
  • GUI: keyboard shortcuts management (input page of global preferences extended with possibility to edit general keyboard shortcuts for VirtualBox Manager and Virtual Machine)
  • GUI: extended messaging mechanism (new non-modal popup overlays used to show non-critical warnings and provide user with additional information)
  • GUI: video capturing support (bug #4766)
  • GUI: host touch devices support (GUI passes host touch-events to guest)
  • Emulated USB touch devices
  • VRDP: support for IPv6
  • NAT: experimental virtual router mode: several VMs are attached to the same internal network and share one NAT service (see the manual for more information)
In addition, the following items were fixed and/or added:
  • VMM: properly handle NMIs on Linux hosts with X2APIC enabled
  • GUI: update check uses https
  • GUI: lot of internal stuff rewritten (cleanup and bug-fixes)
  • Settings: global and per-VM default frontend configuration, useful to select the use of alternative VM frontends
  • Settings: limit depth of snapshot tree to 250 levels, as more will lead to decreased performance and may trigger crashes
  • Main: new event queue implementation which does not use the host's native event queue for processing VirtualBox events anymore
  • Main: use the XDG standard configuration folder instead of .VirtualBox on systems where it is appropriate (bug #5099)
  • VBoxManage: list more information about hard disk/DVD/floppy media, and support the --long option to show really all available details
  • VBoxManage: added support for optional command line parameters for the automatic Guest Additions update
  • VBoxManage: added support for listing active guest sessions, guest processes and/or guest files via guestcontrol list <all|sessions|processes|files>
  • VBoxManage: added support for closing active guest sessions via guestcontrol session close --session-id <ID>| --session-name <name or pattern>|--all
  • VBoxManage: added support for terminating active guest processes via guestcontrol process kill|close|terminate --session-id <ID>| --session-name <name or pattern> <PID> ... <PID n> or guestcontrol [p[s]]kill --session-id <ID>| --session-name <name or pattern> <PID> ... <PID n>
  • VBoxManage: added support for watching guest sessions via guestcontrol watch
  • 3D support: several fixes
  • 3D support: several fixes for Mac OS X hosts
  • OVF: several fixes
  • Keyboard: fix for reporting key sequences like Ctrl+Alt+Del for the USB keyboard emulation
  • Shared Clipboard/X11: support for BMP-format images, contributed by Fran├žois Revol
  • Windows hosts: don't cause massive DPC latency (bug #6242)
  • Windows hosts: consider symlinks when retrieving volume information (bug #11962)
  • Windows Additions: fixed misbehavior with guest display power management (WDDM driver only; bug #11170)
  • Windows guests: ability to track guest user idle times through the newly introduced event IGuestUserStateChangedEvent

Please note that this changelog is not complete.