Developing a Module Using .NET and IIS8 (error 401.2)

Hi, after following the guide "Developing a Module Using .NET" from iis.net by copy & pate the source code into App_Code\source.cs and the config into web.config. I get the HTTP error 401.2 on any request to my local IIS. The module is shown in the IIS manager module list.

And indeed all authenticators are disabled. My installation is a fresh windows 8 and untouched IIS.

My goal is to implement a custom authentication module. Able to forward user credentials to some remote https url and allow or deny access depending on the result. Just like http://blog.neutrino.es/2010/auth-external-the-swiss-army-knife-of-apache-auth/ for apache does.

The followed guide is http://www.iis.net/learn/develop/runtime-extensibility/developing-a-module-using-net.

Thanks,

Michael