I am usually logged in as user A (not an admin). I have Outlook setup for user B (not an admin either). I am running Windows 10 version 1909.
When logged in as user B, everything works smoothly.
When trying to "run as" (using command line or GUI) Outlook as user B while logged in as user A, Outlook starts, I get a blue window with "Outlook Office 2019" and some text in the lower-left corner.
The text changes and reaches "Processing..." at which points nothing happens anymore. I can reduce the window or close it (which closes Outlook), but I can get Outlook to "properly start" and display the mails.
Any idea as to what I could do?