Once in a while, out of nowhere, I get a popup saying that I don't have permission to view a message, in my OUtlook 2019. At that point, no matter what message I select, won't display. I have to restart the computer (restarting the program is not enough).

This happened today, and I have restarted my computer several times without success. I tried to start Outlook in safe mode, and it would not work. I searched online and I saw a suggestion to "repair", but I don't see that option anywhere.

I am using Outlook 2019 with Windows 10. Windows is up-to-date.

Any additional suggestions?