Relentless "Authentication Required" popup


Has anybody else had a problem with a popup constantly appearing saying "“Authentication Required”?
Realm: Proxy Server (etc), which indicates the local machine. Keeps asking for a Username and Password. On a Mac running Mojave 10.14.6.


Yes! It’s very annoying. And sometimes, it keeps asking me to submit error report.


I have the same problem with Axure 10 beta on Mac running Catalina 10.15.7. Is there a working solution available?