Using Classic Outlook on Windows for personal email, calendar, and contact management
We just had this issue come up with a computer in our management.
We found that installing the Actionable Messages Debugger cleared the issue.
We haven't seen the error come back, and aren't sure if this is a 100% resolution. But it seems to work for now.
https://appsource.microsoft.com/en-us/product/office/wa104381686?tab=overview
Another option you could try would be to roll back the version of Office.