No type was found that matches the controller named 'User'

asp.net-mvc, asp.net-mvc-4, asp.net-mvc-routing, asp.net-web-api, asp.net-web-api-routing

Solution

In my case after spending almost 30 minutes trying to fix the problem, I found what was causing it:

My route defined in `WebApiConfig.cs` was like this:

config.Routes.MapHttpRoute(
    name: "ControllersApi",
    routeTemplate: "{controller}/{action}"
);

and it should be like this:

config.Routes.MapHttpRoute(
    name: "ControllersApi",
     routeTemplate: "api/{controller}/{action}/{id}",
        defaults: new { id = RouteParameter.Optional }
);

as you see it was interfering with the standard route defined in `RouteConfig.cs`.

Problem

I'm trying to navigate to a page which its URL is in the following format: localhost:xxxxx/User/{id}/VerifyEmail?secretKey=xxxxxxxxxxxxxxx I've added a new route in the `RouteConfig.cs` file and so my `RouteConfig.cs` looks like this: ``` public class RouteConfig { public static void RegisterRoutes(RouteCollection routes) { routes.IgnoreRoute("{resource}.axd/{*pathInfo}"); routes.MapRoute( name: "VerifyEmail", url: "User/{id}/VerifyEmail", defaults: new { controller = "User", action = "VerifyEmail" } ); routes.MapRoute( name: "Default", url: "{controller}/{action}/{id}", defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional } ); } } ``` Unfortunately, when trying to navigate to that URL I get this page: ``` <Error> <Message> No HTTP resource was found that matches the request URI 'http://localhost:52684/User/f2acc4d0-2e03-4d72-99b6-9b9b85bd661a/VerifyEmail?secretKey=e9bf3924-681c-4afc-a8b0-3fd58eba93fe'. </Message> <MessageDetail> No type was found that matches the controller named 'User'. </MessageDetail> </Error> ``` and here is my UserController: ``` public class UserController : Controller { // GET /User/{id}/VerifyEmail [HttpGet] public ActionResult VerifyEmail(string id, string secretKey) { try { User user = UsersBL.Instance.Verify(id, secretKey); //logger.Debug(String.Format("User %s just signed-in in by email.", user.DebugDescription())); } catch (Exception e) { throw new Exception("Failed", e); } return View(); } } ``` Please tell me what am I doing wrong?

Original source