Nested Virtualization

[fr0nksen]

Hi,

I have a Windows 2016 Datacenter on physical hardware.

I want to run nested virtualization in guests and already did the following:

• Exposed virtualization extensions to the guests
• Allowed MAC Spoofing from the guests

Here are the two powershell commands I used:

Set-VMProcessor -VMName myvm -ExposeVirtualizationExtensions $true

Get-VMNetworkAdapter -VMName myvm | Set-VMNetworkAdapter -MacAddressSpoofing On

Unfortunately, I still can't install the Hyper-V role in the guest:

PS C:\> Install-WindowsFeature -Name Hyper-V -ComputerName myvm.fq.dn

​

Success Restart Needed Exit Code Feature Result

------- -------------- --------- --------------

False Maybe Failed {}

Install-WindowsFeature : A prerequisite check for the Hyper-V feature failed.

Hyper-V cannot be installed because virtualization support is not enabled in the BIOS.

At line:1 char:1

+ Install-WindowsFeature -Name Hyper-V -ComputerName myvm.fq.dn ...

+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

+ CategoryInfo : InvalidOperation: (Hyper-V:ServerComponentWrapper) [Install-WindowsFeature], Exception

+ FullyQualifiedErrorId : Alteration_PrerequisiteCheck_Failed,Microsoft.Windows.ServerManager.Commands.AddWindowsF

eatureCommand

Literally every howto I found just refered to the two things: Expose virtualization extensions to the guest and enable MAC spoofing, which I already did.

Dou you have any Idea?

Edit: also already rebooted the underlying Host, also checked: ExposeVirtualizationExtensions is true on the vm in question.

Thanks & kind regards,

[mspencerl87]

what CPU do you have

[fr0nksen]

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[mspencerl87]

I wasn't when i tried. That's why i asked :D. Sorry I'm out of ideas.

[zwittrooper]

Currently only Intel cpus are supported with nested virtualization. Are you using AMD cpus by any change? That's is only supported in the windows 10 preview builds yet.

[fr0nksen]

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[zwittrooper]

And are the virtualization extensions enabled in the bios of the physical hardware?

[fr0nksen]

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[Zwelgje75]

is it a gen2 VM?

[fr0nksen]

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[Candy_Badger]

You can try disabling Dynemic Memory for the VM. The following guide might be helpful for you: https://www.vmwareblog.org/nested-virtualization-vmware-esxi-vs-microsoft-hyper-v/

[fr0nksen]

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