This has happened to me before, if you right click on outlook and go to properties.
Check to see if you have a Profile listed. If you do you can delete it and recreate it using the Add button.
By clicking on the Add button you force Outlook to start the email accounts wizard. You can choose "View or change existing e-mail accounts" to see if you have any pre-existing settings.
I would delete all email accounts and start from scratch.
Screen Shot of Email Wizard