title: HttpHandler in IIS7 and Visual Studio 2010
body: <p>I'm trying to run an httphandler (ashx) in a asp.net 4 website.</p>
  
  <p>When I call it from Visual Studio integrated server, it returns a 404 error.</p>
  
  <p>It works if I call it on the site configured into the local IIS.</p>
  
  <p>Someone could help?</p>