Overview
Oracle VM VirtualBox (aka 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).
As of version 4.3, VirtualBox introduces the Extension Pack mechanism which allows Oracle and 3rd parties to deliver additional functionality on top of the standard Open Source product.
Presently, VirtualBox runs on Windows, Linux, Macintosh and OpenSolaris hosts and supports a large number of guest operating systems including but not limited to Windows (NT 4.0, 2000, XP, Server 2003, Vista, 7, Windows 8/8.1), DOS/Windows 3.x, Linux (2.4 and 2.6), Solaris and OpenSolaris, and OpenBSD.
What's new in VirtualBox 4.3?
VirtualBox 4.3 introduces a virtual multi-touch user interface, supports the input device features, of the latest platforms such as Windows 8.1, Windows Server 2012 R2 and Mac OS X 10.9 in a virtual environment. More information about VirtualBox 4.3 available here:
Windows 8.1 Virtual Machine
Download VirtualBox 4.3.4 Build 91027
The links in following website correspond to files available for this download. Download the files appropriate for you.
What's new in VirtualBox 4.3.4 Build 91027?
This update includes the following updates:
- VMM: fix for a bug in the Local APIC emulation causing a BSOD when booting certain guests (4.3.0 regression; bug #12240)
- VMM: fixed loading of saved states if VT-x/AMD-V was disabled (4.3.2 regression; bug #12291)
- VMM: fixed single-stepping inside the guest for certain instructions (VT-x only; bug #10947)
- VMM: fixed a performance issue involving APIC accesses after rebooting a VM (4.3.0 regression; VT-x only; bug #12296)
- VMM: fixed TPR patching to be enabled for 32-bit guests even when the chosen guest type is 64-bit (4.3.0 regression; AMD-V only)
- VMM: fixed occasional VINF_EM_TRIPLE_FAULT errors on hosts without the unrestricted guest execution feature (bug #12198)
- GUI: don't bother the user with the BPP warning if no Guest Additions are installed
- GUI: fixed machine-window paint artifacts on VM reboot / guest-screen resize
- GUI: make sure the assigned license and description are attached to the exported appliance
- GUI: fixed bugs in close VM action restrictions handling (bug #12333)
- GUI: fixed incorrect wizards text colors for some unusual look and feel styles (bug #11743)
- GUI: should restore seamless mode as soon as possible after VM reboot or shutdown
- GUI: fixes for medium enumeration
- GUI: the OS X hot corners were not accessible while a VirtualBox VM is running (Mac OS X hosts only; bug #4139)
- GUI: fixed an old bug which bared the host from cleanly shutdown / reboot if the VM selector window is open (Mac OS X hosts only; bug #8254)
- Host-only Networking: fixed creating of host-only network interfaces (4.3.0 regression; bug #12182)
- NAT: don't run into an infinite loop in case the host cannot access any DNS server (4.3.0 regression; bug #12300)
- NAT: don't re-connect the cable if the DNS information changes and the cable was disconnected before (4.3.0 regression; bug #12225)
- NAT: fixed several issues with automatically starting / terminating of NAT networks on VM start / stop and configuration changes
- VBoxNetDHCP: don't block prevent VBoxSVC from terminating (bug #12264)
- 2D Video acceleration: fix crashes on presentation mode switches (bug #9194)
- BusLogic: allow to run VMs with more than one BusLogic SCSI controller enabled
- Keyboard: fixed a VM crash if a VM was resumed from a saved state where at least one key was pressed (bug #11289)
- VBoxSVC: fixed a heap corruption under certain conditions (4.3.0 regression)
- VBoxSVC: fixed a race leading to a hang during initialization (bug #12349)
- OVF: fixed import logic for OVF appliances containing multiple VMs
- OVF: improved logic for finding an appropriate image format during OVF import
- API: block the removal of the current snapshot if it has child snapshots (only relevant for VMs without snapshottable hard disks, their presence always prevented removal), which resulted in VM configuration corruption
- API: mark VM configurations with snapshots but without current snapshot as inaccessible, as this combination is nonsense
- API: fixed information for some automatically generated events (only with XPCOM, Windows host was not affected), which caused errors when getting some of the attributes over the webservice (bug #12379)
- SDK: extended the functionality coverage for the C bindings
- Guest Control: various bug fixes and improved VBoxManage help (bugs #8072, #11044, #12336, #12338, #12346, #12371)
- Windows hosts: another attempt to fix the massive DPC latency (bug #6242)
- Windows host installer: make registering file extensions optional, contributed by Tal Aloni (bug #8009)
- Mac OS X hosts: properly sign the kernel extensions for Mavericks hosts (bug #12256)
- Mac OS X hosts: fixed a bug where the VirtualBox dock icon was not properly removed from the dock after a VM terminated preventing Mavericks hosts from shutting down (bug #12241)
- Mac OS X hosts: fixed minor installer issue (bug #12275)
- Linux hosts / guests: Linux 3.13 compile fixes (bug #12358)
- Linux guests: build the vboxvideo kernel module correctly on OL/RHEL 6.1 guests (bug #11996)
- Linux guests: make 3D work on Slackware 14.1 (bug #12320 comments 3 and 4)
- Guest Additions/3D: fixed an occasional dead-lock (bug #12319)
- Windows Additions/3D: fixed possible memory leaking (bug #12228)
- Windows Additions/XPDM: use separate tables containing valid video modes for each virtual monitor
- Windows Additions: fixed automatic logins for Vista and newer Windows guests (bug #12332)
References:
Oracle's Virtualization Blog
Changelog for VirtualBox 4.3
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