I've used VMware Workstation Pro 16.1.1 to run a Mac OS Big Sur on windows 10 and after upgrading to Windows 11 I got this error:
I've tried:
~ Disable/Enable HyperV
~ Disable/Enable SVM Mode (AMD visualization in BIOS)
~ Repair VMware from install
~ Create a new Machine
~ Uninstall BitDefender Agent (default on Windows 11)
and none of those work.
Did you enable AMD-V?
Try going through this guide (Enable Virtualization in Windows 11) and see if it works.