Ok, I think I found something that worked for me. Right clicking on the docker icon in my task bar, then settings brings up the docker dialog. Under Shared Drives there is a check box to allow what drives are allowed to be shared to docker. As well as an example line in a powershell terminal below it. I had to check the box. I also opted to reset the credentials at the same time. So theoretically it could have been that too. But I did both then restarted docker and mounting seems to now work.
Note, I also made sure my printing settings were setup as above that others reported. Though mine were already enabled.
