question

ManojPatel-4423 avatar image
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ManojPatel-4423 asked azure-cxp-api edited

Getting request time out randomaly while getting access token using MSAL library "confidentialClientApplication.AcquireTokenForClient"

Hello,

I am having a service which communicates with outlook exchange online using EWS. This has OAuth authentication and for that AppID is registered on the Azure portal. I am able to generate access token and communicate with exchange online successfully.

However, randomly in between getting request time out while generating token using MSAL library method "confidentialClientApplication.AcquireTokenForClient".
Please note many call happens to my service from difference places so could it be due to many calls this is failing ? I think retry logic is inbuilt with this and in logs also i see similar thing.
What would be the recommended way to handle this issue ? Please find below code and the full exception entry.

Access token code

   private async Task<string> GetAccessToken()
         {
             try
             {
             
                 var confidentialClientApplication = ConfidentialClientApplicationBuilder.Create(ExchangeOnlineConfiguration.ClientId)
                                                                    .WithTenantId(ExchangeOnlineConfiguration.TenantId)
                                                                    .WithClientSecret(ExchangeOnlineConfiguration.ClientSecret)
                                                                    .Build();
                 var authenticationResult = await confidentialClientApplication.
                     AcquireTokenForClient(new[] { ExchangeOnlineConfiguration.DefaultScope }).ExecuteAsync();
    
                 var accessToken = authenticationResult.AccessToken;
                 return accessToken;
             }
             catch (Exception ex)
             {
                 ContentLogger.logger.Error($"GetAccessToken failed! Exception Details {ex} ");
                 throw;
             }
         }

Exception:

GetAccessToken failed! Exception Details MSAL.Desktop.4.14.0.0.MsalServiceException:
ErrorCode: request_timeout
Microsoft.Identity.Client.MsalServiceException: Request to the endpoint timed out. ---> System.Threading.Tasks.TaskCanceledException: A task was canceled.
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Identity.Client.Http.HttpManager.<ExecuteAsync>d_10.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Identity.Client.Http.HttpManager.<ExecuteWithRetryAsync>d
8.MoveNext()
--- End of inner exception stack trace ---
at Microsoft.Identity.Client.Http.HttpManager.<ExecuteWithRetryAsync>d
8.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Identity.Client.Http.HttpManager.<ExecuteWithRetryAsync>d
8.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Identity.Client.Http.HttpManager.<SendPostAsync>d
4.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Identity.Client.Http.HttpManager.<SendPostAsync>d
3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Identity.Client.OAuth2.OAuth2Client.<ExecuteRequestAsync>d
11`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Identity.Client.OAuth2.OAuth2Client.<GetTokenAsync>d
10.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Identity.Client.OAuth2.TokenClient.<SendHttpAndClearTelemetryAsync>d
8.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.Identity.Client.OAuth2.TokenClient.<SendHttpAndClearTelemetryAsync>d
8.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Identity.Client.OAuth2.TokenClient.<SendTokenRequestAsync>d
5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Identity.Client.Internal.Requests.RequestBase.<SendTokenRequestAsync>d
21.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Identity.Client.Internal.Requests.ClientCredentialRequest.<FetchNewAccessTokenAsync>d
3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Identity.Client.Internal.Requests.ClientCredentialRequest.<ExecuteAsync>d
2.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Identity.Client.Internal.Requests.RequestBase.<RunAsync>d
14.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Identity.Client.ApiConfig.Executors.ConfidentialClientExecutor.<ExecuteAsync>d
3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at GetAccessToken>d
_11.MoveNext() in


thanks,

azure-ad-msaloffice-exchange-server-dev
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@ManojPatel-4423
As this issue is not related to Office Online Server, I would remove the tag "office-online-server-exchange" and add "office-exchange-server-dev".
Thanks for your understanding.

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