This mess is getting worse. I googled this problem and tried a couple of the "solutions" mentioned.

One suggestion was to run the Program "Connected Customer". When I do that it goes through getting updates then trying to license my products. This results in this error message: "ProSeries failed to license products. Error storing the local entitlement cache." This process eventually terminates with noting "Nothing is licensed".

I ran the program in the ProSeries 2021 directory called "Tools-Repair Updates". That appeared to download and reinstall all prior updates, but then I get the same loop as running "Connected Customer" did above.  

Is my only solution to contact Intuit Technical Support by phone?