Disable automatic mailbox check when Outlook wasn't closed right?

Outlook often starts by telling me the program wasn't closed correctly, and
running a check for problems in my mailbox that takes 15 minutes or more. I
always close Outlook correctly; sometimes the problem arises from logging in
from different computers; sometimes it just happens when I shut down my PC at
night and turn it back on in the morning. In any event, I can't do anything
with my PC's settings (other than try to close Outlook properly, which I do)
as it's a work PC and is centrally set up.

In the 100+ times Outlook has "checked my mailbox for problems," it has not
found a problem. Does anyone know of a way to turn off this annoying
feature?? Thanks!