How do I stop IIS7 from putting out its own 404 before my MVC app gets a chance to handle it?

Question

I have an ASP.NET MVC 2 application, which has an Application_Error event handler in global.asax. In this, I\'m detecting the case where the Exception type is HttpException

Answer 1

In ASP.NET MVC I use a custom ErrorController with an Index method (default handler) and a few custom handlers (401, 404) using the following web.config settings

I don't use Application_Error except for logging purposes.