I was suddenly unable to access my Inbox when using Outlook Web Access. Without much else to do, I created a new user account with a new name, renamed the corrupt account, and then renamed the new account to the name of the old, corrupt account. This resolved the OWA problem, but now I have a new problem. Specifically, I created the new account with a different user name and e-mail address so it would not conflict with the old corrupt user account. Then I renamed the old corrupt account, and changed the name of the new account to the old one. For some bizzare reason, each time I change the account name to the name of the old, corrupt user account, it takes the name, only to revert back to the old name after a minute or so. Moreover, when other users on my server try to invite me to a meeting, they cannot find me in the directory and are unable to invite me to their meetings. Does anyone have any idea what is going on?