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I install the application using the .deb, but I can't get a virtual machine to boot. How to install it correctly from the beginning?

Opening my newly-created XP machine yields this message:

Failed to open a session for the virtual machine Windows ******* ****s.

VT-x features locked or unavailable in MSR. (VERR_VMX_MSR_LOCKED_OR_DISABLED).

Result Code: NS_ERROR_FAILURE (0x80004005)
Component: Console
Interface: IConsole {db7ab4ca-2a3f-4183-9243-c1208da92392}
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2 Answers 2

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Your error message (VT-x features locked or unavailable in MSR.) shows that either your processor does not support VT-x or it is disabled in your BIOS.

To start your VM you have to configure your VM with VT-x disabled. This can be done by selecting the VM click on Change then select System and on the tab Acceleration you can disable VT-x/AMD-V for the VM.

After that the VM should start.

(Please note that the tabs and names could be different as I use a German localized VirtualBox.)

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  • The BIOS setting did it for me.
    – don.joey
    Apr 14, 2014 at 7:57
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Before starting your instance on your Oracle VM VirtualBox Player, go to settings, system, acceleration, and un-check "Enable VT-x/AMD-V". Start your instance and you should no longer see this error.

This answer https://forums.virtualbox.org/viewtopic.php?f=6&t=43403#p219282 solved it!

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