VirtualBox 4.2.16 Build 86992 Latest Version Free Download

Introduction: VirtualBox 4.2.16 Build 86992
VirtualBox 4.2.16 Build 86992 Latest Version Free Download is a general-purpose full virtualizer for hardware. Targeted at server, desktop and embedded use, it is now the only professional quality virtualization solution that is also Open Source Software. VirtualBox is a powerful virtualization product for enterprise as well as home use. VirtualBox provides are useful for several scenarios: Running multiple operating systems simultaneously.

VirtualBox allows you to run more than one operating system at a time. This way, you can run software written for one operating system on another (for example, Windows software on Linux or a Mac) without having to reboot to use it. Since you can configure what kinds of “virtual” hardware should be presented to each such operating system, you can install an old operating system such as DOS or OS/2 even if your real computer’s hardware is no longer supported by that operating system.

Software vendors can use virtual machines to ship entire software configurations. For example, installing a complete mail server solution on a real machine can be a tedious task. With VirtualBox, such a complex setup (then often called an “appliance”) can be packed into a virtual machine. Installing and running a mail server becomes as easy as importing such an appliance into VirtualBox.

Testing and disaster recovery. Once installed, a virtual machine and its virtual hard disks can be considered a “container” that can be arbitrarily frozen, woken up, copied, backed up, and transported between hosts. On top of that, with the use of another VirtualBox feature called “snapshots”, one can save a particular state of a virtual machine and revert back to that state, if necessary. This way, one can freely experiment with a computing environment. If something goes wrong (e.g. after installing misbehaving software or infecting the guest with a virus), one can easily switch back to a previous snapshot and avoid the need of frequent backups and restores. Any number of snapshots can be created, allowing you to travel back and forward in virtual machine time. You can delete snapshots while a VM is running to reclaim disk space.

Infrastructure consolidation. Virtualization can significantly reduce hardware and electricity costs. Most of the time, computers today only use a fraction of their potential power and run with low average system loads. A lot of hardware resources as well as electricity is thereby wasted. So, instead of running many such physical computers that are only partially used, one can pack many virtual machines onto a few powerful hosts and balance the loads between them.

Supported OS: Windows XP, Server 2003, Server 2008, Windows 7, Server 2012, Windows 8 (32-bit and 64-bit).
Mac OS X hosts: 10.6 (Snow Leopard, 32-bit and 64-bit), 10.7 (Lion, 32-bit and 64-bit), 10.8 (Mountain Lion, 64-bit).
Linux hosts (32-bit and 64-bit): Ubuntu 8.04 (“Hardy Heron”), 8.10 (“Intrepid Ibex”), 9.04 (“Jaunty Jackalope”), 9.10 (“Karmic Koala”), 10.04 (“Lucid Lynx”), 10.10 (“Maverick Meerkat), 11.04 (“Natty Narwhal”), 11.10 (“Oneiric Oncelot”), 12.04 (“Precise Pangolin”), Debian GNU/Linux 5.0 (“lenny”) and 6.0 (“squeeze”), Oracle Enterprise Linux 4 and 5, Oracle Linux 6.

Changes in VirtualBox 4.2.14 (released 2013-06-21):
VMM: another TLB invalidation fix for non-present pages
VMM: fixed a performance regression (4.2.8 regression; bug #11674)
GUI: fixed a crash on shutdown
GUI: prevent stuck keys under certain conditions on Windows hosts (bugs #2613, #6171)
VRDP: fixed a rare crash on the guest screen resize
VRDP: allow to change VRDP parameters (including enabling/disabling the server) if the VM is paused
USB: fixed passing through devices on Mac OS X host to a VM with 2 or more virtual CPUs (bug #7462)
USB: fixed hang during isochronous transfer with certain devices (4.1 regression; Windows hosts only; bug #11839)
USB: properly handle orphaned URBs (bug #11207)
BIOS: fixed function for returning the PCI interrupt routing table (fixes NetWare 6.x guests)
BIOS: don’t use the ENTER / LEAVE instructions in the BIOS as these don’t work in the real mode as set up by certain guests (e.g. Plan 9 and QNX 4)
DMI: allow to configure DmiChassisType (bug #11832)
Storage: fixed lost writes if iSCSI is used with snapshots and asynchronous I/O (bug #11479)
Storage: fixed accessing certain VHDX images created by Windows 8 (bug #11502)
Storage: fixed hang when creating a snapshot using Parallels disk images (bug #9617)
3D: seamless + 3D fixes (bug #11723)
3D: version 4.2.12 was not able to read saved states of older versions under certain conditions (bug #11718)
Main/Properties: don’t create a guest property for non-running VMs if the property does not exist and is about to be removed (bug #11765)
Main/Properties: don’t forget to make new guest properties persistent after the VM was terminated (bug #11719)
Main/Display: don’t lose seamless regions during screen resize
Main/OVF: don’t crash during import if the client forgot to call Appliance::interpret() (bug #10845)
Main/OVF: don’t create invalid appliances by stripping the file name if the VM name is very long (bug #11814)
Main/OVF: don’t fail if the appliance contains multiple file references (bug #10689)
Main/Metrics: fixed Solaris file descriptor leak
Settings: limit depth of snapshot tree to 250 levels, as more will lead to decreased performance and may trigger crashes
VBoxManage: fixed setting the parent UUID on diff images using sethdparentuuid
Linux hosts: work around for not crashing as a result of automatic NUMA balancing which was introduced in Linux 3.8 (bug #11610)
Windows installer: force the installation of the public certificate in background (i.e. completely prevent user interaction) if the –silent command line option is specified
Windows Additions: fixed problems with partial install in the unattended case
Windows Additions: fixed display glitch with the Start button in seamless mode for some themes
Windows Additions: Seamless mode and auto-resize fixes
Windows Additions: fixed trying to to retrieve new auto-logon credentials if current ones were not processed yet
Windows Additions installer: added the /with_wddm switch to select the experimental WDDM driver by default
Linux Additions: fixed setting own timed out and aborted texts in information label of the lightdm greeter
Linux Additions: fixed compilation against Linux 3.2.0 Ubuntu kernels (4.2.12 regression as a side effect of the Debian kernel build fix; bug #11709)
X11 Additions: reduced the CPU load of VBoxClient in drag’and’drop mode
OS/2 Additions: made the mouse wheel work (bug #6793)
Guest Additions: fixed problems copying and pasting between two guests on an X11 host (bug #11792).

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