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it looks like completely removing and reinstalling parallels has solved the problem
I am running macOS Catalina 10.15.7. Tried First Aid and reboot - same issue.
Yes - I have. My point is that the item highlighted in the second illustration in this KB article (Screen Shot 2017-08-14 at 12.18.44 PM.png)...
I have just accepted an automatic upgrade to Parallels 16.1.0. After the upgrade a pop-up "Launch Parallels Desktop" comes up asking me to Allow...