VirtualBox – VERR_NEM_VM_CREATE_FAILED

Looks to be an issue if you have Windows HyperV enabled.

Search for and Open up the “Turn Windows features on or off” and make sure “Windows Hypervisor Platform” is unchecked and hit OK to apply it.

Disable Windows Hypervisor Platform

Reboot computer and launch VM

https://superuser.co/questions/1442766/virtualbox-fails-to-start-with-verr-nem-vm-create-failed