Outlook Profile Reset This will remove all local Outlook Configuration (including Mailboxes!)   1. Open Control Panel (Windows-Key + R =>  control ) 2. Select User Accounts / Benutzerkonten 3. Select Mail (Microsoft Outlook) 4. At Profile select Show Profiles / Profile anzeigen... 5. Select all necessary Profiles and click Entfernen / Remove After you do this, the next time you start Outlook you'll need to re-configure your Mail Accounts