After Update Can't Create Any VMs (Config Invalid)

I thought I would start clean so I blew away all my VMS and uninstalled parallels by dragging the app to the trash. I then manually went in and deleted the parallels folder in Library and also and prefs. If I try and make a new Windows VM with the arm VHDX file I get to the end and it gives this error. If I use an Ubuntu iso it gives this error. As it stands I can't create any VMs.



This is on the Apple DTK mac mini with 11.3 beta.

 

That is the problem. The DTK is not an M1 Mac and the Technical Preview requires an M1. It sounds like a previous version of the Technical Preview worked on your DTK, so restoring that from a backup seems to be the only way to fix your problem.