When you attempt to access XIA Configuration Server you may see the following error message:

HTTP Error 401.1 - Unauthorized


The issue can be caused if 

  • You are accessing XIA Configuration Server using a NetBIOS name or fully qualified domain name that is different from the server name - for example the server is and you are using the address

- and -


To resolve the issue

  • Access the server using the server's fully qualified domain name.

- or -

- or -

  • Register the SPN for the custom FQDN and specific credentials using the following Microsoft article KB871179.