Why need user account and password?

[Anonymous]

When I visit an asp.net website, there appears a dialog, which needs inputing user id and password and domain name. I tried to set the IIS property,but still no change. Pls help me. Thanks!

[Oyvind Sean Kinsey]

Open the properties of the virtual directory or website and open the Directory Security tab. Hit [edit] under Anonymous access and authentication control and make sure that the checkbox for Anonymous access is checked of. This is what I would try first.

[rushing]

The anonymous access is checked. And IUSER_xxx , ASPNET users were added into the list of the directory. Now even the index.htm could not be visited.