IIS 7.5 Can't open Handler Mappings?

Question

I need to update the handler mappings on IIS 7.5 to allow URLs that don\'t have extensions to be routed to an application. The application was originally written in ASP.NET 2.0,

Answer 1

I was having the same issue, it turns out the project used the IIS URL rewrite module (not installed by default). After I installed this, the site worked first time.

Check your web.config file (especially if it doesn't open in IIS) for any non default IIS modules.