Computer user: Really? Why?
It's a PEBKAC issue sir. It's best handled in person.
Problem exists between keyboard and chair
Definition being: The IT problem you are having exists between the chair you are sitting on and the keyboard you are using
(Helpdesk operative checks the file and it opens fine)
Helpdesk Operative: Ahhh....I see now, this is caused by P.E.B.K.A.C.