We are using Exchange 2007 as our email server. I have a laptop user that gets this message when attempting to start Outlook 2003. Most of the info I have found regarding this issue points to a corrupted local .pst file. I have removed the default .pst and .ost files from the users local profile and recreated the mail profile and connection thru Control Panel without success. I have also attempted to create a new user on a different desktop computer, also without success. The users mailbox is accessible via our internal URL for OWA. I'm at a loss at what to do next anyone out there with any ideas.