How to Set Up OWA, such that users will not need to enter domain information in the NT credentials popup.

Summary

Normally users, need to enter their userid in the format, <domain_name>\userid, in the popup box, requesting NT credentials.  The following procedure eliminates the need to enter domain information.  This works if there is more than one NT domain as well.

Procedure

1. Open up the IIS command console or Microsoft Management Console (MMC).
   
    
2. Right click on the Default web site and choose properties..
   
    
3. Choose the directory security tab and click on properties for basic authentication.  (Also ensure basic authentication is checked).
   
    
4. For Default Domain enter "\", without the quotes.
   
    
5. Click OK to commit changes.
   
    
6. Restart WWW Publishing service.