• “VT-x is not available. (VERR_VMX_NO_VMX)” in VirtualBox


     

    Sometimes you can get “VT-x is not available. (VERR_VMX_NO_VMX)” error if you are trying to start x64 bit virtual machine in VirtualBox.
    VT-x is not available

    Failed to open a session for the virtual machine Windows 10 TP.

    VT-x is not available. (VERR_VMX_NO_VMX).

    Result Code: E_FAIL (0x80004005)
    Component: Console
    Interface: IConsole {8ab7c520-2442-4b66-8d74-4ff1e195d2b6}


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    There are three most common reasons for this error:

    • Your CPU doesn’t support VT-x or AMD-V virtualization
    • VT-x or AMD-V is not enabled in BIOS (UEFI)
    • You have Hyper-V virtualization enabled in Windows

    You can fix first one only by replacing CPU with a new one, but it is easy to fix second and third reasons.

    Solution 1: Enable VT-x in BIOS

    • Restart your computer
    • Load into BIOS (press Del, F2, Esc key. Depends on motherboard)
    • Find Virtualization setting and enabled it. It might look different in you system, but here are some examples: Enable VT-x in biosEnable VT-x in biosEnable VT-x in UEFI

    Solution 2: Disable Hyper-V virtualization

    • Run cmd.exe as Administrator
    • Execute:
      1
      dism.exe /Online /Disable-Feature:Microsoft-Hyper-V
    • Reboot computer

    Another way:

    • Open Control Panel
    • Go to Program section -> Turn Windows features on or off
    • Disable Hyper-V Disable Hyper-V
    • Reboot computer
     
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  • 原文地址:https://www.cnblogs.com/rongfengliang/p/7153152.html
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