How do I fix 404.17 error on Win Server 2k8 and IIS7

Question

I\'ve setup a new .net 2.0 website on IIS 7 under Win Server 2k8 and when browsing to a page it gives me a 404.17 error, claiming that the file (default.aspx in this case) a

Answer 1

Always try "Revert to Parent" in Handler Mappings first.

I was getting 404.17 when trying to run ASP.NET 4.0 in IIS 7.5. I tried all of the above and eventually got the correct Handler Mappings manually set up and the error went away.

Then, on yet another website with the same error, I tried "Revert to Parent" in Handler Mappings and it added 6 *.aspx mappings and everything worked perfectly.

Obviously, you'd have to have the parent configured properly (from the install or otherwise), but this is definitely the first step everyone should take since it is so easy.