public static void UpdateStatusCodeForFailedAuthentication()
        {
            HttpContext httpContext = HttpContext.Current;

            if (httpContext != null &&
                httpContext.Response.StatusCode == (int)HttpStatusCode.Found)
            {
                HttpRequestWrapper request = new HttpRequestWrapper(httpContext.Request);
                if (!request.IsBrowserRequest())
                {
                    httpContext.Response.StatusCode = (int)HttpStatusCode.Unauthorized;
                    httpContext.Response.ClearContent();
                    try {
                        if (httpContext.Response.Headers.AllKeys.Contains("Location"))
                        {
                            httpContext.Response.Headers.Remove("Location");
                        }
                    }
                    catch (PlatformNotSupportedException) {
                        // We need IIS 7 integrated mode to remove the header.  Just swallow the exception if
                        // we can't remove the header.
                    }
                }
            }
        }