Category:IIS
To have CI working on Windows Server 2008, IIS7,  install the “url rewriting plugin for IIS GO Live!”, and add 2 rules.

First one should be (index.php|robots.txt|images|test.php), action “none”, further processing should be disabled. This works as a white list for items not to be processed by CI.
The second one is simply “.*”, action rewrite, address index.php/{r:0} , uncheck the “include querystring” checkbox.
At this moment, at least for debugging, installing PHP using the isapi plugin seams more reliable. You’ll at least get better error handling, when I ran it using FastCGI I got IIS errors instead of the PHP error message for fatals.