Question

I hav asp.net mvc 3 application.

When user pass id of non existing object I return 404 view in this way:

Response.StatusCode = 404;
return View("404");

Locally all works fine and I have my custom error page. But on production, I have standart asp.net 404 page. I try to set customErrors either to “on” or “off” – results is the same.

Answer 1

Found solution here: Routing for custom ASP.NET MVC 404 Error page

Set another magic setting in web config under system.webServer section:

<httpErrors errorMode="Detailed" />