My user has nearly the same problem. He had one event 1
month ago which is set from 4pm until midnight (12am), now
the event was deleted in his calendar but the reminder
still come every 5 minutes, we can not dismiss, can not
turn off the reminder, it's really a crazy problem.
I have tried to start Outlook with /cleanreminders switch
but it didn't solve the problem. Do you think it help if
I export all calendar items, delete calendar (with admin
right), create new calendar and then import all items
again. Since the wrong appointment was deleted, the new
calendar would have no corrupted data ? Do you think it
can help ? Please advise. Many thanks in advance.