Getting token from Office 365 throws 'unknown_error' - outlook

Question

I'm following the following tutorial(Outlook dev center tutorial) and my code is throwing an unknown_error in this part (at the get the token):
public async Task<ActionResult> Authorize() {
// Get the 'code' parameter from the Azure redirect
string authCode = Request.Params["code"];
string authority = "https://login.microsoftonline.com/common";
string clientId = System.Configuration.ConfigurationManager.AppSettings["ida:ClientID"]; ;
string clientSecret = System.Configuration.ConfigurationManager.AppSettings["ida:ClientSecret"]; ;
AuthenticationContext authContext = new AuthenticationContext(authority);
// The same url we specified in the auth code request
Uri redirectUri = new Uri(Url.Action("Authorize", "Home", null, Request.Url.Scheme));
// Use client ID and secret to establish app identity
ClientCredential credential = new ClientCredential(clientId, clientSecret);
try {
// Get the token
var authResult = await authContext.AcquireTokenByAuthorizationCodeAsync(authCode, redirectUri, credential, scopes); <--- HERE
// Save the token in the session
Session["access_token"] = authResult.Token;
// Try to get user info
Session["user_email"] = GetUserEmail(authContext, clientId);
return Redirect(Url.Action("Inbox", "Home", null, Request.Url.Scheme));
} catch (AdalException ex) {
return Content(string.Format("ERROR retrieving token: {0}", ex.Message));
}
}
Stack trace:
at Microsoft.Experimental.IdentityModel.Clients.ActiveDirectory.AdalHttpClient.<GetResponseAsync>d__0`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Experimental.IdentityModel.Clients.ActiveDirectory.AcquireTokenHandlerBase.<SendHttpMessageAsync>d__18.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Experimental.IdentityModel.Clients.ActiveDirectory.AcquireTokenHandlerBase.<SendTokenRequestAsync>d__b.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Experimental.IdentityModel.Clients.ActiveDirectory.AcquireTokenHandlerBase.<RunAsync>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Experimental.IdentityModel.Clients.ActiveDirectory.AuthenticationContext.<AcquireTokenByAuthorizationCodeCommonAsync>d__4a.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Experimental.IdentityModel.Clients.ActiveDirectory.AuthenticationContext.<AcquireTokenByAuthorizationCodeAsync>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at OutlookCSharp.Controllers.HomeController.<Authorize>d__3.MoveNext() in C:\\_DevLocal\\OutlookApi\\OutlookCSharp\\Controllers\\HomeController.cs:line 61
anyone knows what might be going wrong?

Answer 1

You can try this project , which already implemented the code from your referring url . And it can successfully login.
https://github.com/aukgit/Google-Outlook-Calender-Integrate/releases
There could be several things that could have gone wrong :
Probably you had missed to download the exact nuget packages
Install-Package Microsoft.Experimental.IdentityModel.Clients.ActiveDirectory -Version 4.0.208020147-alpha -Pre
Install-Package Microsoft.Office365.OutlookServices-V2.0
Probably app is not registered correctly with url.
Probably scopes are not given,