HTTP Error 405 With ASP.Net MVC and HTTP PUT on IIS 7.5

November 27, 2009 21:11 by admin

I have been doing most of my ASP.Net MVC RESTful web service development on IIS6 or IIS7. Recently however, I tried it on Windows 7 RTM using IIS7.5. Using the “Classic .Net AppPool” everything worked great. Then I tried the “DefaultAppPool” (i.e. using Integrated Mode). Everything seemed fine… until I wanted to PUT a new resource and DELETE a resource.