Step by Step Directions for Techs
There is a problem with Windows 2008 / Windows 2008 R2 that comes up when you try to browse locally. This seems to happen for me most frequently in lab environments. For example, I recently put together a proof of concept for ADFS to service a web farm / web server. When testing ADFS using hosts files and browsing to the ADFS site locally, I will get authentication errors. The solution is to disable the loopback check.
To do that: