HttpHandler not working in IIS 7

Question

I have an HttpHandler configured in my web.config file like so:

Answer 1

We have a legacy application where changing the webconfig to user system.webServer -> handlers was not an option. We solved this 404 issue by setting the application pool's "Managed Pipeline Mode" to "Classic" on our development machines.

Here is the blog post where I found this solution http://codeskaters.blogspot.ae/2014/04/httphandler-error-404-not-found.html

Answer 2

Registration of HttpHandlers is different for IIS7 than for previous versions of IIS. Specifically, you register the handlers in the web.config section named <system.webServer><handlers> not in <httpHandlers>.

See this question for an example.