Custom Errors works for HttpCode 403 but not 500? - asp.net-mvc-3

Question

I am implementing custom errors in my MVC3 app, its switched on in the web.config:
<customErrors mode="On">
<error statusCode="403" redirect="/Errors/Http403" />
<error statusCode="500" redirect="/Errors/Http500" />
</customErrors>
My controller is very simple, with corresponding correctly named views:
public class ErrorsController : Controller
{
public ActionResult Http403()
{
return View("Http403");
}
public ActionResult Http500()
{
return View("Http500");
}
}
To test, I am throwing exceptions in another controller:
public class ThrowingController : Controller
{
public ActionResult NotAuthorised()
{
throw new HttpException(403, "");
}
public ActionResult ServerError()
{
throw new HttpException(500, "");
}
}
The 403 works - I get redirected to my custom "/Errors/Http403".
The 500 does not work - I instead get redirected to the default error page in the shared folder.
Any ideas?

Answer 1

I've got 500 errors up and running by using the httpErrors in addition to the standard customErros config:
<system.webServer>
<httpErrors errorMode="Custom" existingResponse="Replace">
<remove statusCode="403" subStatusCode="-1" />
<error statusCode="403" path="/Errors/Http403" responseMode="ExecuteURL" />
<remove statusCode="500" subStatusCode="-1" />
<error statusCode="500" path="/Errors/Http500" responseMode="ExecuteURL" />
</httpErrors>
</system.webServer>
And removing this line from global.asax
GlobalFilters.Filters.Add(new HandleErrorAttribute());
Its not perfect however as I'm trying to retrieve the last error which is always null.
Server.GetLastError()
See https://stackoverflow.com/a/7499406/1048369 for the most comprehensive piece on custom errors in MVC3 I have found which was of great help.

Answer 2

I've got the same problem, I catch the Exception directly in Global.asax in that case:
protected void Application_Error(object sender, EventArgs e)
{
Exception exception = Server.GetLastError();
Response.Clear();
HttpException httpException = exception as HttpException;
var code = httpException == null ? 500 : httpException.GetHttpCode();
// Log the exception.
if (code == 500)
logError.Error(exception);
Server.ClearError();
Context.Items["error"] = code;
RouteData routeData = new RouteData();
routeData.Values.Add("controller", "Error");
routeData.Values.Add("action", "Index");
routeData.Values.Add("code", code);
IController errorController = new ErrorController();
errorController.Execute(new RequestContext(new HttpContextWrapper(Context), routeData));
}
That redirects to my custom Error 500: /Error/Index?code=500