Installing Hyper-V Role in VMware Workstation; error Hyper-V cannot be installed: A hypervisor is already running

This quick post and video shows how to get past the Hyper-V cannot be installed: “A hypervisor is already running” error when trying to install the Hyper-V Role on a server running as a VM on VMware Workstation. This is common in a virtual lap scenario for certification study.

To resolve this issue, change the guest OS type to Hyper-V.Caution: Hyper-V functionality inside VMware Fusion is experimental and is unsupported.To change the guest OS type to Hyper-V:

Shut down the virtual machine.
Click Virtual machine > Settings.
Select General and change the guest OS type to Hyper-V (unsupported).
Select Processors & Memory in the Settings.
In the Advanced options of Processors & Memory, select Enable hypervisor applications in the virtual machine
Reboot the virtual machine to enable Hyper-V.

The video is here