asp.net - In IIS, why doesn't Window Authentication show up as one of the options for my web application?

Question

I'm reading about how to set up windows authentication for my web application on IIS 7. In the description they have Window Authentication as an option in IIS.

I have windows authenication turned on for my machine(I'm on Windows 7 Professional 64bit) and I still don't see it as one of the authentication options for my web application. Why?

Answer 1

I got hit by this and it was something as simple as having not started IIS Manager with 'run as administrator'. Very frustrating, but I got there in the end!