Windows – Cannot enable Hyper-V in Win 10 Pro, checkbox filled in “Turn Windows features on or off”

hyper-vwindows 10

To begin with, I have virtualization enabled in BIOS, which confirms the output of systeminfo.exe.

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I can't install it with DISM:

dism.exe /Online /Enable-Feature:Microsoft-Hyper-V /All

The operation is complete but Microsoft-Hyper-V feature was not enabled.
A required parent feature may not be enabled. You can use the /enable-feature /all option to automatically enable each parent feature from the following list. If the parent feature(s) are already enabled, refer to the log file for further diagnostics.

Microsoft-Hyper-V-All

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In "Turn Windows features on or off" there is filled square instead of checkbox.

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What do I do to turn Hyper-V on?

EDIT #1

I'm missing some updates but I don't know if it's related to my problem. It won't install KB4054517 (OS Build 16299.125) no matter what I do. I think it's been a known problem for more than a month.

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Best Answer

I have reinstalled whole Win 10 from fresh ISO with newest build. It seems like a nuke option for small problem, but this is the only thing that worked for me.

Reinstalling immediately solved Hyper-V problem and failing KB4054517 update problem at same time.

I believe this is not a real answer, so I'm not going to accept it.

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