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Hello,
Since yesterday I have been having problems with my Azure Notification Hub instance.
All the messages sent to my Android app are being dropped because the NotificationHubClient.SendFcmNativeNotificationAsync throws the following exception:
Microsoft.Azure.NotificationHubs.Messaging.MessagingException: Unexpected exception encountered TrackingId:13de39f6-2339-4e63-bce6-a55b4ecc2fcb,TimeStamp:2021-01-15T18:15:44.5236057Z ---> System.Net.Http.HttpRequestException: An error occurred while sending the request. ---> System.Net.WebException: The request was aborted: Could not create SSL/TLS secure channel.
at System.Net.HttpWebRequest.EndGetRequestStream(IAsyncResult asyncResult, TransportContext& context)
at System.Net.Http.HttpClientHandler.GetRequestStreamCallback(IAsyncResult ar)
--- End of inner exception stack trace ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.NotificationHubs.NotificationHubClient.<SendRequestAsync>d__201.MoveNext()
--- End of inner exception stack trace ---
at Microsoft.Azure.NotificationHubs.ExceptionsUtility.HandleUnexpectedException(Exception ex, String trackingId)
at Microsoft.Azure.NotificationHubs.NotificationHubClient.<SendRequestAsync>d__201.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.Azure.NotificationHubs.NotificationHubClient.<>c__DisplayClass189_0.<<SendNotificationImplAsync>b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.Azure.NotificationHubs.NotificationHubRetryPolicy.<RunOperation>d__4`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.Azure.NotificationHubs.NotificationHubRetryPolicy.<RunOperation>d__4`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.Azure.NotificationHubs.NotificationHubClient.<SendNotificationImplAsync>d__189.MoveNext()
This has been working fine for the past 6months+ and yesterday it started to crash with the previous exception.
I have checked the TLS/SSL settings or the Azure App Service that is executing the SendFcmNativeNotificationAsync method and the Minimum TLS version is 1.2. Also all my TLS/SSL bindings are correct and valid.
This is URGENT!
Do you have any suggestions?
Any idea if it's possible to restart/reset my Azure Notification Hub instance?
Hi @Mircea Deliu ,
Please see the private comment below in order to reach out to us directly.
Regards,
Ryan
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Hi, I have the exactly same problem since yesterday. Can you help? Thanks!
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Hi, I also have this problem too, it started two days ago. Could you help me? Thanks, have a nice weekend!
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I can confirm the same issue (and exactly the same Exception) at our side. Even though nothing has been changed, connection to Azure Notification Hub had stopped to work.
The issue has been sorted out by updating the TargetFramework to .NET v4.8 and re-deploying the app, as the others here suggested.
I wonder why Microsoft does not take things more seriously!
Thanks for your feedback @Miroslav Machacek . I'll share with the rest of team so that we can better mitigate this issue. I do apologize for the inconvenience this has caused to all invovled.
Regards,
Ryan
Hello, I solved my problem replacing targetFramework="4.5" to targetFramework="4.7" in every web.config, I hope it can help you too. For more details use this link 58195987
Thank you @Geraldo Aparecido Borges , I have updated my targetFramework to 4.8 and all is good now.
@Geraldo Aparecido Borges , encountered the same issue and modified like @Mircea Deliu to 4.8. Thanks.