[Solved] Windows 10, after Fall Creators Update 10/2017 - VT-x is not available

[Gubaer]

Hi,

after the Windows 10 Fall Creators Update (October 2017) VirtualBox doesn't launch existing VMs anymore.

Code: Select all

VT-x is not available (VERR_VMX_NO_VMX).
Fehlercode: E_FAIL (0x80004005)
Komponente: ConsoleWrap
Interface: IConsole {872da645-4a9b-1727-bee2-5585105b9eed}

virtualization is enabled in the BIOS/UEFI-settings, though

I disabled Hyper-V virtualization, though:

Code: Select all

dism.exe /Online /Disable-Feature:Microsoft-Hyper-V

Any hints how to fix this?

[socratis]

I disabled Hyper-V virtualization

Did you do a complete shut down of the host? Do you have FastBoot enabled? If so, disable it. Please go thoroughly through the FAQ: I have a 64bit host, but can't install 64bit guests.

[Gubaer]

Thanks, works again. I had to:

• turn off FastBoot (google for "turn off fastboot windows 10 microsoft")
• disable Hyper-V

  Code: Select all

  dism.exe /Online /Disable-Feature:Microsoft-Hyper-V

[socratis]

Great, thanks for the feedback. Marking as [Solved].