protected void Application_Error(object sender, EventArgs e)
        {
            var httpContext = ((HttpApplication)sender).Context;
            ExecuteErrorController(httpContext, Server.GetLastError());
        }

public static void ExecuteErrorController(HttpContext httpContext, Exception exception)
        {
            if (!exception.Message.Contains("NotFound") && !exception.Message.Contains("ServerError"))
            {
                var routeData = new RouteData();
                routeData.Values["area"] = "Administration";
                routeData.Values["controller"] = "Error";
                routeData.Values["action"] = "Insert";
                routeData.Values["exception"] = exception;

                using (Controller controller = new ErrorController())
                {
                    ((IController)controller).Execute(new RequestContext(new HttpContextWrapper(httpContext), routeData));
                }
            }
        }

public ActionResult Insert(Exception exception)
            {
                ErrorSignal.FromCurrentContext().Raise(exception);
                Server.ClearError();
                Response.Clear();

                switch (Tools.GetHttpCode(exception)) // (int)HttpStatusCode.NotFound;
                {
                    case 400:
                        return RedirectToAction("BadRequest");
                    case 401:
                        return RedirectToAction("Unauthorized");
                    case 403:
                        return RedirectToAction("Forbidden");
                    case 404:
                        return RedirectToAction("NotFound");
                    case 500:
                        return RedirectToAction("ServerError");
                    default:
                        return RedirectToAction("DefaultError");
                }
            }

    public ActionResult Unauthorized()
            {
                return View();
            }
...

//GlobalConfiguration.Configure(WebApiConfig.Register);
//FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);

Runtime Error

Description: An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed.

Details: To enable the details of this specific error message to be viewable on the local server machine, please create a <customErrors> tag within a "web.config" configuration file located in the root directory of the current web application. This <customErrors> tag should then have its "mode" attribute set to "RemoteOnly". To enable the details to be viewable on remote machines, please set "mode" to "Off".


<!-- Web.Config Configuration File -->

<configuration>
    <system.web>
        <customErrors mode="RemoteOnly"/>
    </system.web>
</configuration>