"WinRTError: The specified protocol is unknown.rnn   at getResultsOfAsyncOp (Function code:338:5)n   at op.completed (Function code:427:21)

var loginURL = "https://www.facebook.com/dialog/oauth?client_id=[snip]&display=popup&scope=user_about_me&response_type=token&redirect_uri=ms-app://s-[snip]/"
                    Windows.Security.Authentication.Web.WebAuthenticationBroker.authenticateAsync(
                        Windows.Security.Authentication.Web.WebAuthenticationOptions.none,
                            new Windows.Foundation.Uri(loginURL))
                            .then(function success(result) {

                            }, function error(error) {

                            });