Enabling the Default Domain and Realm for IIS
Use the following procedure to enable the default domain and realm for IIS with basic authentication:
1. From the left pane of the IIS Manager, select the node <ComputerName> and in the middle pane, select Authentication.
2. Under the Authentication types listed, select Basic Authentication and in the Action pane, click Edit….
3. Enter the appropriate Default domain: andRealm: values. The default value used for Realm by Windchill with the bundled PTC HTTP Server is "Windchill".