Today i got a call from a customer stating that Outlook 2007 was starting, but giving an error message “A Dialog box is open” trying to open or compose new emails. The problem was that Outlook started on a new user profile, and the usual Outlook/Word dialog that asks you for your Name/Initials was gettign hidden someplace (since word starts silently in outlook).
Solution is to close everything, and start Microsoft Word first. Enter your name and initials, and then you’ll be able to start outlook.
Update
Bill pointed out that if you don’t have the full Office installed, you won’t be able to launch Word. So to fix it, you’ll have to temporarily remove a Microsft Update item number KB946983. Use the control panel to remove this update, start Outlook, then windows will apply the update again at a later time.