I am introducing Outlook 2010 into our company, and it has been pretty smooth for the most part. However, I have one user who was experiencing Event ID 1002 "Application Hang" errors. My first thought was something wrong with Office installation, so I re-installed, and it did not help. Next, I thought something may be wrong with the Windows 7 (Pro) installation, so I set her up with a spare XP box for the interim. Well... she is experiencing the same trouble on the XP box, so now I suspect something wrong with the Exchange 2007 mailbox, or something. No other users are having this problem.
I did find that I had an expired internal security certificate in my Exchange server, but that has now been fixed. Are there any tools I can use (free if possible) to determine what may be wrong with the user's mailbox, or can anyone give me advice on where else to look for the problem?