VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU General Public License (GPL) version 2. See "About VirtualBox" for an introduction.
Presently, VirtualBox runs on Windows, Linux, Macintosh, and Solaris hosts and supports a large number of guest operating systems including but not limited to Windows (NT 4.0, 2000, XP, Server 2003, Vista, Windows 7, Windows 8, Windows 10), DOS/Windows 3.x, Linux (2.4, 2.6, 3.x and 4.x), Solaris and OpenSolaris, OS/2, and OpenBSD.
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.
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.
VirtualBox is being actively developed with frequent releases and has an ever growing list of features, supported guest operating systems and platforms it runs on. VirtualBox is a community effort backed by a dedicated company: everyone is encouraged to contribute while Oracle ensures the product always meets professional quality criteria.
This is a maintenance release. The following items were fixed and/or added:
- GUI: Improvements in Native Language Support area
- Main: OVF Export: Added support for exporting VMs containing Virtio-SCSI controllers
- Recording settings: Fixed a regression which could cause not starting the COM server (VBoxSVC) under certain circumstances (bug #21034)
- Recording: More deterministic naming for recorded files (will now overwrite old .webm files if present)
- Linux Host and Guest Additions installer: Improved check for systemd presence in the system (bug #19033)
- Linux Guest Additions: Introduced initial support for kernel 6.0
- Linux Guest Additions: Additional fixes for kernel RHEL 9.1 (bug #21065)
- Windows Guest Additions: Improvements in Drag and Drop area
- VMM: Fixed possible Linux guest kernel crash when configuring Speculative Store Bypass for a single vCPU VM
- GUI: In the storage page of the virtual machine settings dialog, fixed a bug which disrupted mouse interaction with the native file selector on KDE
- NAT: Prevent issue when host resolver incorrectly returned NXDOMAIN for unsupported queries (bug #20977)
- Audio: General improvements in saved state area
- Recording: Various fixes for settings handling
- VGA: Performance improvements for screen updates when VBE banking is used
- USB: Fixed rare crashes when detaching a USB device
- ATA: Fixed NT4 guests taking a minute to eject CDs
- vboximg-mount: Fixed broken write support (bug #20896)
- SDK: Fixed Python bindings incorrectly trying to convert arbitrary byte data into unicode objects with Python 3, causing exceptions (bug #19740)
- API: Fixed an issue when virtual USB mass storage devices or virtual USB DVD drives are added while the VM is not running are by default not marked as hot-pluggable
- API: Initial support for Python 3.10
- API: Solaris OS types cleanup
- Windows host: Fixed regression in 6.1.32 leading to guest hangs when Hyper-V is used (bug #20787)
- Windows host: Fixed possible issues with saving and restoring VM state when using Hyper-V/NEM mode
- Linux and Solaris hosts: Allow to mount shared folder if it is represented as a symlink on a host side (bug #17491)
- Linux Host and Guest drivers: Introduced initial support for kernels 5.18, 5.19 and RHEL 9.1 (bugs #20914, #20941)
- Linux Host and Guest drivers: Better support for kernels built with clang compiler (bugs #20425 and #20998)
- Solaris Guest Additions: General improvements in installer area
- Solaris Guest Additions: Fixed guest screen resize in VMSVGA graphics configuration
- Linux and Solaris Guest Additions: Fixed multi-screen handling in VBoxVGA and VBoxSVGA graphics configuration
- Linux and Solaris Guest Additions: Added support for setting primary screen via VBoxManage
- Linux and Solaris Guest Additions: Fixed X11 resources leak when resizing guest screens
- Linux and Solaris Guest Additions: Fixed file descriptor leak when starting a process using guest control (bug #20902)
- Linux and Solaris Guest Additions: Fixed guest control executing processes as root
- Linux Guest Additions: Improved guests booting time by preventing kernel modules from being rebuilt when it is not necessary (bug #20502)
- Windows Guest Additions: Fixed VBoxTray crash on startup in NT4 guests on rare circumstances
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