[Solved] Microsoft Office PowerPoint Splash Screen "stuck" on screen

Apparently some application called QuickLook gets stuck.

Happily, it is stored somewhere with "Mic" in the name.

By opening terminal, and using the lsof (List Open Files) command, and filtering the list to just things with "mic" (case-insensitive)
with a grep -i "mic" , we find various Microsoft Office pieces running.

Since the thing has a giant red P on it, I guessed it was part of the PowerPoint Application and killed that:
with kill -9 #processid
P of PowerPoint Microsoft Office stuck hovering over Mac Desktop

in this case:

kill -9 1890

And poof it is gone :-)

kill -9 Process-id-of-PowerPoint.app