ASP.NET Web API : Correct way to return a 401/unauthorised response

Question

I have an MVC webapi site that uses OAuth/token authentication to authenticate requests. All the relevant controllers have the right attributes, and authentication is workin

Answer 1

You also follow this code:

var response = new HttpResponseMessage(HttpStatusCode.NotFound)
{
      Content = new StringContent("Users doesn't exist", System.Text.Encoding.UTF8, "text/plain"),
      StatusCode = HttpStatusCode.NotFound
 }
 throw new HttpResponseException(response);