A web site code can't connect to a soap service on the same server

Question

My ASP.NET web site calls a .net service from a code in App_Code to retrieve some information.

The web service is hosted at http://mydomain/ws/DirectoryService

Answer 1

Problem solved. It turned out that I needed to Edit an anonymous authentication settings, so that when used (in my case it is always), the code would go under application pool's identity, and not IUSR: