Sign up ×
Server Fault is a question and answer site for system and network administrators. It's 100% free, no registration required.

We have an intranet site ie,, that users access by entering "http"://

Our problems started when we migrated to IIS 7 running on a new 2003 server. We got rid of our single-sign on code and implemented a security model where we capture a user's domain credentials which we then authenticate against a DB.

In order to get the domain credentials passed to our ASP.NET app, we have the following settings:

Anonymous Authentication:Disabled ASP.NET Impersonation: Enabled Basic/Digest/Forms Authentication: Disabled Windows Authentication: Enabled

We allow "*" and deny "?" in the web.config.

Browsing "http":// from any client PC results in a domain login prompt, and if your enter a proper user/pwd, you can get in.

However, browsing "http":// while remoting into the server results in 3 domain login prompts and eventually a 401 error - unauthorized.

We have traced this behavior to problems with our web site where we have pages doing "screen scraping" using the HttpRequest calling a url on the same server.

When doing a HttpRequest from any other client, using a test harness that passes authorized credentials, all is good. So internal HttpRequest calls on the server fail, just like attempts to browse that server's url from within a remote session.

Why would a to "http":// on server fail authentication?

share|improve this question

1 Answer 1

See this Microsoft support article:

Users experience authentication issues when they access a Web page in IIS 6.0 or query Microsoft SQL Server 2000 after you install Windows Server 2003 Service Pack 1


You upgrade a Microsoft Windows Server 2003-based computer that is running Microsoft Internet Information Services (IIS) 6.0 or Microsoft SQL Server 2000 to Windows Server 2003 Service Pack 1 (SP1).

After you do this, users experience authentication issues when they use Web applications or when they use a program that queries the database. For example, a user may experience symptoms that are similar to one of the following:

  • The user receives an "Access denied" error message when the user tries to access a Web page that retrieves data from a back-end database.

  • The user cannot connect to another database server that is located in a Network Load Balancing (NLB) cluster. Queries to the database server fail. The symptoms that users experience may vary depending on your particular environment.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.