Using Classic Outlook on Windows for personal email, calendar, and contact management
This has started happening to me when I shut down the computer on both my work computer (Windows 11) and my personal computer (Windows 10). It first started on the work computer in beginning of august and a little later on my personal computer. It certainly smells a lot like an update of some sort may have caused this.
It happens when I shut down the computer without manually closing Outlook first. If I manually close Outlook then no problem. But if I shut down, it will complain that Outlook is preventing the computer from shutting down. When I click cancel to go back and see, I see this specific problem and messagebox.
This is also my experience. I have even rebuilt my machine in the last week (for an unrelated issue) and it still recurs. This is clearly a software fault in Outlook itself.
As with the others, I'm not explicitly using any 'Actionable Message' content. I may have opened and email with it, but definitely no large quantity. It seems to occur even if I do no specific email operations.