Hey Greg, have you tried a repair on VS? I usually end up doing that when weird sh!t happens and although it takes a while it is quicker than it used to be.

Good idea. I forgot that option was a drop-down on the Installer. It's not all hugs and puppies though, because this happened:

* The repair took about 20 mins and asked for a reboot.

* Running VS2022 caused a flash of a window and it silently crashed and vanished. Event log reports a .NET runtime crash.

* I cleaned vast numbers of vs* folders and files from %TEMP% and rebooted.

* VS2022 stalled opening a Form in the designer. I closed the window and it restarted itself.

* I finally opened the .NET 6.0 project Windows Forms designer and the toolbox is empty.

So unfortunately, it was all futile. Good idea though.

Greg K