VirtualBox 4.3.10

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.

March 25, 2014
Freeware
Windows/Mac/Linux
103 MB
28,481
117
   (34 votes)

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, Linux and Solaris.

VirtualBox has special software that can be installed inside Windows, Linux and Solaris 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). There are also guest additions for OS/2 with somewhat reduced functionality.

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.

What's New:

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

  • VMM: more work on improving the emulation of certain MSR registers (e.g. bugs #12224, #12544)
  • VMM: fixed a VERRINVALIDRPL Guru Meditation when booting certain guests (bug #11350)
  • VMM: experimental support for SSE 4.1 / SSE 4.2 passthrough, see the manual for more information how to enable it (bug #8651)
  • VMM: fix for recent Linux kernels with software virtualization
  • GUI: experimental HID LEDs synchronization for Windows hosts, see the manual for more information
  • GUI: warn the user if the Oracle Extension Pack is not installed and the user tries to activate the remote display feature (bug #9104)
  • GUI: make sure that a minimized guest (using mini toolbar in fullscreen/seamless mode) keeps the minimized state (bug #12199)
  • GUI: popup banner's "do not show this message again" check-box replaced with corresponding button
  • GUI: network adapter cables can now be connected/disconnected directly through the running virtual machine Devices / Network menu a Network status-bar indicator
  • GUI: the new VM wizard now proposes 64-bit guests on 64-bit hosts by default; better distinction between 32-bit OS types 64-bit OS types (bug #12533)
  • GUI: better error message if appliance import fails (bug #12657)
  • GUI: allow to set host-combination to 'None' using the Global settings / Input page (bug #12730)
  • GUI: don't switch the guest to a black screen during online snapshot merge (4.3 regression)
  • VBoxManage: when exporting an appliance, support the suppression of MAC addresses, which means they will be always recreated on import, avoiding duplicate MAC addresses for VMs which are imported several times
  • AHCI: fixed a VM hang during suspend under certain circumstances
  • AHCI: fixed a VM hang during online snapshot merge under certain circumstances
  • AHCI: fixed a bug which resulted in Windows XP guest hangs if a SATA CDROM is attached (bug #12417)
  • AHCI: fixed a Guru Meditation under certain conditions
  • AHCI: ejecting a CD/DVD medium failed under certain conditions
  • AHCI: disk hotplugging fixes
  • NAT: transparent handling of host sleep/resume and network configuration changes if the dnsproxy is enabled or if the hostresolver is used (bug #12441)
  • NAT: fixed crash and misbehaviour under some circumstances with ICMP packets having TTL=1
  • NAT Network: fixed IPv6 reassembly
  • NAT Network: ping proxy implemented
  • OVF: fixed reading of the OVF 0.9 section element (4.3 regression; bug #12345)
  • OVF: several fixes
  • 3D: several fixes, multiscreen fixes (e.g. bug #9124)
  • 3D: include 3D content in captured videos (bug #12666)
  • 3D: include 3D content in captured screenshot (bug #11758)
  • VGA: proper handling of legacy graphics modes if the Guest Additions are active (bug #6649)
  • USB: fixed crash during isochronous transfer under rare circumstances
  • BIOS: better disk geometry handling of SCSI drives
  • API: fix crashes in Java API clients using the XPCOM binding, happened with output parameters only (bug #11232)
  • VBoxSVC: documented the handling of host power management events (see the manual for more information) and added an extradata item for configuring the handling of the battery-low event (bug #9925)
  • VBoxSVC: fixed a bug which could trigger a crash if a VM snapshot was restored the second time and the VM has associated bandwidth groups (bug #12569)
  • VBoxSVC: properly detect ifconfig if located in /bin (bug #12713)
  • Shared Folders: fixed a failure to restore transient shared folders when starting a VM from a saved state (bug #12578)
  • Mac OS X hosts: fixed issue when the application icon was frozen in the dock if the bridging interface was not connected to a network (bug #12241)
  • Linux hosts: also consider the physical package ID when determining the number of physical CPU cores
  • Linux hosts / guests: don't warn in kernel log if memory allocation fails (bug #11171)
  • Solaris hosts: fixed the autostart SMF script (bug #11720)
  • Windows hosts: fixes for non-ANSI code page user names and similar environment contents (bug #12596)
  • Windows hosts / guests: fixed setting and using a guest user's process environment variables (relevant for Guest Control)
  • Windows Additions: fixed handle leaks in VBoxTray (bug #12563)
  • Windows Additions: fixed a crash while detecting active guest users
  • Windows Additions: fixed restoring backed up D3D files on XPDM -> WDDM upgrade
  • Guest Control: fixed setting and using a guest user's process environment variables
  • Linux Additions: support Enterprise Linux 6.5 kernels (bug #12505)
  • Linux Additions: fixed CPU hot-remove on newer Linux kernels
  • Linux / Solaris Additions: don't automount a shared folder which is already mounted
  • X11 Additions: support X.Org Server 1.15 (bug #12623)