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401 - Unauthorized Error while generating token through Plugin

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Posted on by Divya_R

Hello,

I have created a Plugin to call REST API but while I am generating token it gives "401 Unauthorized" error in the result.

Below is the code I am using to generate the token. As soon as it goes to res, it throws an error.

private static async Task GetToken(string clientId, string clientSecret, string tokenBaseUrl)
        {
            using (var client = new HttpClient())
            {
                client.BaseAddress = new System.Uri(tokenBaseUrl);
               

                try
                {
                    var keysValues = new List<KeyValuePair>
                    {
                        new KeyValuePair("grant_type", "client_credentials"),
                        new KeyValuePair("client_id", clientId),
                        new KeyValuePair("clientSecret", clientSecret)
                        

                };
                   

                    var res = await client.PostAsync("/ul/auth/oauth/v2/token", new FormUrlEncodedContent(keysValues));
                    return JsonConvert.DeserializeObject(await res.Content.ReadAsStringAsync()).access_token.Value;
                
                
                }
                catch(Exception e)
                {
                    throw new Exception(e.Message);
                }
            }
        }

In header the error is "x-ca-err: 300201"

However, I have tested my code in console app, it's working and also verified - client id, client secret, url - everything is correct.

Any help is really appreciated!!

Thank You!

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Bipin D365 28,964 Super User 2024 Season 1 on at

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RE: 401 - Unauthorized Error while generating token through Plugin

Hi,

create the entities in the JSON as classes, and let JSON.NET deserialize the JSON into that.

stackoverflow.com/.../project-without-service-reference-error-type-newtonsoft-json-linq-jtoken-is

Please mark my answer verified if this is helpful!

Regards,

Bipin Kumar

Follow my Blog: xrmdynamicscrm.wordpress.com/
Divya_R on at

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RE: 401 - Unauthorized Error while generating token through Plugin

Hi Guido Preite,

Thanks so much. It really helped.. my bad that clientSecret was the problem.

I am getting one more error though while updating the entity. I am getting the correct json response but the exception I am getting is on - service.Update(entity);

Exception : Type 'Newtonsoft.Json.Linq.JToken' is a recursive collection data contract which is not supported. Consider modifying the definition of collection 'Newtonsoft.Json.Linq.JToken' to remove references to itself.

Below is the code and packages used in my plugin:

public void Execute(IServiceProvider serviceProvider) { string id = ""; ITracingService tracingService = (ITracingService)serviceProvider.GetService(typeof(ITracingService)); IPluginExecutionContext context = (IPluginExecutionContext)serviceProvider.GetService(typeof(IPluginExecutionContext)); try { if (context.InputParameters.Contains("Target") && context.InputParameters["Target"] is Entity) { Entity entity = (Entity)context.InputParameters["Target"]; IOrganizationServiceFactory serviceFactory = (IOrganizationServiceFactory)serviceProvider.GetService(typeof(IOrganizationServiceFactory)); IOrganizationService service = serviceFactory.CreateOrganizationService(context.UserId); if (context.MessageName == "Create") { if (entity.LogicalName == "contact" && entity.Attributes.Contains("email")) { String emailaddress = entity.GetAttributeValue("email"); id = email.Split('@')[0]; var jsonResponse = JObject.Parse(ContactData(_clientId, _clientSecret, _tokenBaseUrl, _urlBase, idul).GetAwaiter().GetResult()); if (entity.GetAttributeValue("name") == null) { entity["name"] = jsonResponse["name"]; service.Update(entity); } } } } }

Packages used:

using System.ServiceModel; using Microsoft.Xrm.Sdk; using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Xml; using System.Net.Http; using System.Net; using System.IO; using IdentityModel.Client; using System.Runtime.Serialization; using System.Web; using System.Net.Http.Headers; using Newtonsoft.Json; using Newtonsoft.Json.Linq;
Guido Preite 54,087 Super User 2024 Season 1 on at

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RE: 401 - Unauthorized Error while generating token through Plugin

If is an external API there are very few things you can try. First of all I will try by putting the values directly inside the plugin (maybe you have an error when you retrieve the info from the unsecure configuration), second I will check again the name of the parameters you are passing, for the grant_type client_credentials looks strange to me that you are passing client_id but "clientSecret", it normally is "client_secret"

hope it helps
Divya_R on at

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RE: 401 - Unauthorized Error while generating token through Plugin

Hi Guido Preite ,

Thanks for your reply. No, this code is to call an external API, and the above code posted is generating token in console app with no issues.

I am calling GetToken method like this -

client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", await GetToken(_clientId, _clientSecret, _tokenBaseUrl));CodeCode

clientId, clientSecret an tokenURL I have added into Unsecure configuration.

Thank You!
Guido Preite 54,087 Super User 2024 Season 1 on at

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RE: 401 - Unauthorized Error while generating token through Plugin

is this code to get a dataverse token? if yes, the code you posted I doubt it works inside a console application, both values and the url are wrong