Topic
Call to WHvSetupPartition failed: ERROR_SUCCESS (VERR_NEM_VM_CREATE_FAILED)
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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
Christophe