I am using microsoft outlook 2003 on windows xp with an exchange server. Anytime I want to reply, forward, create new mail or add something to tasks, calendar, or contacts I get an error message, "The messaging interface has returned an unknown error. If the problem persists please restart outlook." I have done the "detect and repair" and restarted to no avail. Anyone have any suggestions? I've googled this message and have not come up with any solutions please help!