authentication issue when embedding in aspnetcore

hey michael 

thx for the response

but if you read my orig post

i stated i had already followed that post

and the result im getting is the result i posted

(adjusted so as to render the non-json result i am getting)

for clarity here is my current code:

       public async Task<ActionResult> index() {
            var result = new EmbedConfig { Username = Username };
            var error = GetWebConfigErrors();
            if (error != null)
            {
                result.ErrorMessage = error;
                return View(result);
            }

            var authenticationResult = await AuthenticateAsync();
            if (authenticationResult == null) {
                result.ErrorMessage = "Authentication Failed.";
                return View(result);
            }
            else
            {
                return View(new connectVM(
                                isJson(authenticationResult) ? JsonConvert.DeserializeObject<string>(authenticationResult) : authenticationResult));
            }

            //var tokenCredentials = new TokenCredentials(authenticationResult.AccessToken, "Bearer");
        }


        //.private static async Task<OAuthResult> AuthenticateAsync()
        // JsonConvert.DeserializeObject<OAuthResult>(authenticationResult) 
        private static async Task<string> AuthenticateAsync()
        {
            Uri oauthEndpoint = new Uri(AuthorityUrl);
            using (HttpClient client = new HttpClient())
            {
                HttpResponseMessage result = await client.PostAsync(oauthEndpoint, new FormUrlEncodedContent(new[]
                {
                    new KeyValuePair<string, string>("resource", ResourceUrl),
                    new KeyValuePair<string, string>("client_id", ClientId),
                    new KeyValuePair<string, string>("grant_type", "password"),
                    new KeyValuePair<string, string>("username", Username),
                    new KeyValuePair<string, string>("password", Password),
                    new KeyValuePair<string, string>("scope", "openid"),
                }));

                string content = await result.Content.ReadAsStringAsync();
                //Console.WriteLine(content.ToString());
                return content.ToString();
            }
        }

UPDATE:

ive tried logging in directly through browser url

here is the url im using:

https://login.windows.net/common/oauth2/authorize/?client_id=myid&grant_type=password&username=myun&password=mypw&scope=openid

does the url at least look correct for the non-sensitive info?

still getting the sign in box