I searched Internet for the answer but everyone were recommended to verify BIOS configuration what I've already done. I checked BIOS settings and it seemed ok. Well, it was actually good because I couldn't use a64 bit virtual machines anyway ) But, I still didn't know why it happened. Please ensure that you have enabled VT-x/AMD-V properly in the BIOS of your host computer.Īfter some time I noticed that VirtualBox stopped showing 64 bit versions in the Version list. Your 64-bit guest will fail to detect a 64-bit CPU and will not be able to boot. VT-x/AMD-V hardware acceleration has been enabled, but is not operational. To my surprise VirtualBox reported the following error: Everything was ok up to the moment when I wanted to install a 圆4 version of an operating system on a fresh virtual machine. I needed a virtualization software so I decided to use a free Oracle VM Virtual Box. Operating Systems: Windows 10, Windows 11, Windows 7 (32 bit), Windows 7 (64 bit), Windows 8.In my day to day work I use a 64 bit version of Windows 8.1 Pro N. Oracle today released a 6.1 maintenance release which improves stability and fixes regressions. Looking for a new challenge? We're hiring a VirtualBox Principal Software Developer (US, UK, Romania). Here you will find links to VirtualBox binaries and its source code. 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 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.
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