VirtualBox Manager VERR_VMX_MSR_LOCKED_OR_DISABLEDWhile creating a Ubuntu 12.10 machine VirtualBox I ran into an error – VirtualBox VERR_VMX_MSR_LOCKED_OR_DISABLED – on my company issued HP ProBook. This halts the startup process of the virtual machine. You won’t be able to use it.

Here is the complete log and a screenshot:

Failed to open a session for the virtual machine Ubuntu 12.10.

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

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

I remembered that there were issue were issues with HP bios from the VirtualBox FAQ using ENABLE VT-X/AMD-V:

some HP BIOSES have a glitch, When You ENABLE VT-X/AMD-V, You DISABLE it, so do try both ways.

VirtualBox Enable VT-x AMD-VSo the first solution I tried was to uncheck the box to ENABLE VT-X/AMD-V. That solved my problem. Now VirtualBox was able to start my Ubuntu machine. Check the screenshot how to disable (or enable the) VT-X/AMD-V setting.

Yep, I know this is against the advice I gave to improve VirtualBox performance. However I need it on this hardware to get my machines running…

12 thoughts on “VirtualBox VERR_VMX_MSR_LOCKED_OR_DISABLED solved

  1. Pingback: How to VirtualBox overview - deltalounge

  2. rfariya

    I had the same problem, but even with enabling the virtualization Technology in my BAIOS it didn’t work and it gave me the same error. After a bit searching I figured out that it is a bug in hp Baios and you should not just restart your system, but do completely shutdown and then it would work.

  3. seshu

    The amount of memory allocated to these VMs is also uncomfortably close to the total amount of available memory in the host (4.3GB available, 4GB allocated as RAM, more as VRAM). In an ideal world your VM should not use more than half the available host memory, otherwise wierd intermittent problems are the likely result. Descrese VM RAM to less than half physical RAM memory.

  4. mehmet

    oracle vm box worked on my win 8.1 asus desktop pc before I extended hard drive partition.
    After it did not cpu I-5 supports it but I could not find it in my bios what is disabled!!

  5. Martin

    Hello Soma Deáki,

    I had a similar issue. VT-x features locked or unavailable in MSR. VERR_VMX_MSR_LOCKED_OR_DISABLED. I run the VMBox for years and not this…
    I checked all the Forums and nothing helped me, than I realised there was an update of my antivirus software.
    So problem came from the new AVAST antivirus software.
    In AVAST Options-> Troubleshooting->Disable Hardware Virtualisation

    After a reboot I could start my VirtaulBox again, VT-x features were no longer blocked.

    I hope this post help some of you too.


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