When you attempt to access XIA Configuration Server you receive the following message

HTTP Error 401.2 - Unauthorized

You are not authorized to view this page due to invalid authentication headers.


This is caused by the Internet Information Server (IIS) authentication settings being incorrectly configured.


  • Open the Internet Information Services (IIS) Manager from Administrative Tools.

  • Browse to the XIA Configuration Server application, by default this is XIAConfiguration.

  • Goto the Authentication section.

  • Ensure that only Windows Authentication is Enabled.

  • Right click Windows Authentication and select Providers.

  • Ensure that the Enabled Providers is set to Negotiate and NTLM.