We have an internal ASP.NET Webforms application running on a Windows 2008/IIS7 server which has been running fine until we installed MVC3.
Now any requests redirect
After 4 hours, of trying everything... Windows 2008 R2 the files were green in Window Explorer. The files were marked for encryption and arching that came from the zip file. unchecking those options in the file property fixed the issue for me.