Azure Notification Hub on sending fcm v1 notification says "The Notification could not be delivered due to an unknown error"

Question

Followed the steps as per migration guide- https://learn.microsoft.com/en-gb/azure/notification-hubs/notification-hubs-gcm-to-fcm
Generated new private key from firebase console✔️

set up private key, client email, project id to azure Google (FCM v1) ✔️

registered android devices with notification hub ✔️

on test send , it shows error X

Answer 1

@Rumaisa K N

I'm glad that you were able to resolve your issue and thank you for posting your solution so that others experiencing the same thing can easily reference this! Since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others ", I'll repost your solution in case you'd like to accept the answer .

Issue:

• Unable to send notifications on fcmv1 and it is failing with unknow error.

Solution:

• This issue is resolved. When registered with a tag different to the previous tag used with gcm, it is properly getting registered.

If I missed anything please let me know and I'd be happy to add it to my answer, or feel free to comment below with any additional information.

I hope this helps!

If you have any other questions, please let me know. Thank you again for your time and patience throughout this issue.

Answer 2

This issue is resolved. When registered with a tag different to the previous tag used with gcm, it is properly getting registered.