I read that in my rummaging for reasons. I don't know of any Add-ins I EVER installed, certainly not knowingly before the problems.


And, I went in a deleted every Add-in that was in Outlook.


I don't go in and mess around with settings, so I can't see that being a problem.


As far as I know, the ONLY thing that changed on the system around the time this started was installing the Windows update - 20H2(?) 2H20(?), whatever it was.


But even if it WAS some bizarre Outlook thing, WHY am I seeing the behavior in PowerPoint for one file? My PowerPoints open fine, but this one I was sent, doesn't except in Safe Mode...