Nested Virtualization in Hyper-V
Run a Virtual Machine, a Data Center or just Windows Subsystem for Linux inside a Virtual Machine.
Hyper-V in Windows does support nested virtualization, but you need to configure it for each machine. Hyper-V manager doesn't provide a simple way to enable it. But there is a simple powershell command:
Set-VMProcessor -VMName <VMName> -ExposeVirtualizationExtensions $true
Note: Make sure VM is turned off before you run the command
It is also good to double check if Windows Boot is configured with Virtualization:
bcdedit /enum | findstr -i hypervisorlaunchtype
If not you might need to enable Virtualization in Windows Boot:
bcdedit /set hypervisorlaunchtype Auto