To start off this blog with some usefull information, I´m going to explain how to develop an ASP.NET 2.0 web application which has both forms authentication and Windows authentication enabled.
Let’s say we’re developing a web application which will be running on our local intranet. There’s a pretty good chance that same intranet will have a domain and thus a domain server, which in this case will be a Microsoft Active Directory. Now, after our user has logged in to his (or her) computer, we don’t want to bother him with credentials any more. He provided the correct password to get into the machine, so he’s trusted from that point on.