Call to WHvSetupPartition failed: ERROR_SUCCESS (VERR_NEM_VM_CREATE_FAILED)

I was having some issues with VirtualBox out of nowhere, and I hadn’t changed any settings in a while so I’m not quite sure why this became a problem (maybe a Windows update changed configs?), but here was my solution:

1. Open up Windows Features via search

2. Uncheck these (if they’re already checked and/or exist):

a. Hyper-V

b. Containers

c. Virtual Machine Platform

d. Windows Hypervisor Platform

3. If this still doesn’t solve your issue, do this:

a. Open Windows PowerShell via search

b. Type bcdedit /set hypervisorlaunchtype off

c. Reboot the machine

Just note that following these steps will most likely make WSL (Windows Subsystem) not work unless you reverse these changes.

Hope this helps