Virtual Pci Express Port Failed to Power on with Error 'A hypervisor feature is not available to the user‘

Question

Hi all,

I'm trying to make a VM using Hyper-V on Windows 11 pro with GPU pass-through using DDA. I have followed the steps outlined in this link and have tried this fix with no luck.

I just get this error: Virtual Pci Express Port Failed to Power on with Error 'A hypervisor feature is not available to the user‘

With the Virtualization Based Protection disabled in the Group Policy editor, System Info still says Virtualization Base Security is Running even after reboot.

Thank you in advance for any help.

Answer 1

Hi,

Please set the registry value EnableVirtualizationBasedSecurity under HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\DeviceGuard to 0 and restart the computer. If it does not exit you can create the DWORD value manually.

Best Regards,

Ian Xue

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Answer 2

Hello,

I'm also getting the same error message, even after trying the solution that @Ian Xue . Can you please help me.

Thanks, in Advance,

Rufus

Answer 3

Just open PowerShell as Administrator, then type:

Get-VMAssignableDevice -VMName "Your_VM_Name"

Get-VMAssignableDevice -VMName "Your_VM_Name" | Remove-VMAssignableDevice

Then power on your VM.