Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
I am having the same problem, the only add in I didn't disable is the Exchange add in as it is needed in our environment (SBS 2011) or is it? The problem doesn't surface when is safe mode.
I rebuilt the profile, removed flag from the columns and changed the open message default not to be maximized and it seemed to have worked until today it started back up again, I also disabled all addins. Again it works fine in safe mode but the problem will not go away. I also considered it may be the drivers for the video card but that was not the case.