WOW, this is so much easier than the process outlined in the Microsoft article that the VMWare error in 14.5 refers to - it has you manually deleting registry keys, etc.
This worked for me - note that I got an error on reboot from Docker which apparently DOES require MSFT virtualization to be enabled - or maybe there's a config setting in Docker to fix this - but for being able to use VMWare this works fine.
Many thanks KenGrant79 & Kiwitech62,
The Credential Guard error happened to me out of the blue on Player 15 and Win 10 Pro. I did nothing to change or implement Credential Guard. I was running Player one day and had the fault the next.
Your fix worked instantly, and I appreciate your post.