Download VirtualBox 4.3.20

Oracle has released version 4.3.20 of VirtualBox. VirtualBox can be used to install other operating systems in a virtual environment on a computer. In this way it is possible to use different operating systems on the same hardware side by side and at the same time. VirtualBox is available for Windows XP and above, OS X, Linux, and Solaris, and is capable of many guest operating systems to turn.

In version 4.3 of VirtualBox, the complete virtualization code has been rewritten, among other things, which has fixed several problems and also shows several performance improvements. Furthermore, there is video capture and support for ipv6, various virtual machines running on the same computer can now communicate with each other via the internal network and there is support for multi-touch screens. This eleventh update also includes the following improvements:

The following items were fixed and/or added:

• VMM: fixed reboot hang of 32-bit Windows SMP guests (bug #13319, #13462)
• VMM: proper Math Fault handling with certain legacy guests (bug #9042AMD hosts)
• VMM: fixed a Guru Meditation VINF_EM_TRIPLE_FAULT on older CPUs that don’t support MSR-bitmaps (VT-x only; bugs #13034, #13125, #13311, #13425, #13426, #13463, #13585)
• GUI: fix 3D overlay window re-parenting issue when VM goes to full screen mode on X11 hosts.
• GUI: fix occasional loss of focus in full-screen mode on X11 host systems (4.3.16 regression)
• GUI: Mac OS X: wizards should have Cancel button (bug #12541)
• GUI: added a global option to prevent automatic raising of the new window by mouse move with multi-screen guests (bug #8878)
• API: accept remote display port 0 as the default RDP port (bug #8534)
• VBoxManage: fixed crash when executing showvminfo command under certain circumstances (bug #13190)
• ACPI: fixed occasional Guru Meditations in ACPI timer code (4.3.18 regression; bug #13521)
• EFI: improved performance of IDE disk access
• EFI: fixed a bug in the EFI video driver which prevented Windows to boot in UEFI mode (bug #12022)
• EFI: properly announce the amount of RAM for big VMs (bugs #11103 and #13211)
• Storage: fixed a crash under certain circumstances when a medium was ejected from a drive attached to the SATA controller without inserting a new medium before pausing or closing the VM (4.3.16 regression)
• Storage: fixed an interrupt acknowledge issue causing hanging guests or slower I/O (4.3.18 regression)
• Storage: fixed broken resume after the VM was suspended due to a full disk if host I/O caching is used
• Storage: fixed a Guru Meditation under certain conditions when using the DevLsiLogic controller with VMs running in raw mode (4.3 regression; bugs #12254, #12655, #12709, #12774, #12886)
• Guest Control: fixed a bug which might lead to a crash during recursive copy
• SDK: Java COM binding fixes
• iPXE: enable the HTTP download protocol (bug #13628)
• Runtime: do not use a fixed stack size creating temporary threads during initialization (bug #13038)
• Windows hosts: fixed more startup problems on certain Windows hosts due to conflicts with anti-virus software; better error reporting (4.3.14 regression; bug #13187)
• Windows hosts: fixed DirectSound host audio failure under certain conditions (bug #13418)
• Windows hosts: fixed additional cases of 4.3.14 regression whereby AltGr stopped working for some people (bug #13216)
• Windows Additions: preserve guest monitor layout when resizing Windows 7 or newer guests
• Linux Additions: Linux 3.18 compile fixes (bug #13515)