Unable to update FCMV1 credentials on Azure

Question

Unable to update FCMV1 credentials on Azure

Zack Frankowski 20

Hi - I'm trying to update my FCMv1 credentials on Azure Notification hubs. Here is my JSON file.

project_id: REDACTED

private_key: -----BEGIN PRIVATE KEY-----\nREDACTED\n-----END PRIVATE KEY-----\n

client_email: REDACTED.iam.gserviceaccount.com

I keep getting bad request.

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I have FCMV1 enabled on Google Cloud
User's image

I'm new at Notification Hubs but I was hoping to get it working anyways. I was wondering if anyone can help me out? It's most frustrating!

Thanks - Zack

Zack Frankowski 20 Reputation points

2025-07-01T19:41:30.3266667+00:00

That worked perfectly - I needed to add the IAM role! Thank you so much!!

I noticed even though I'm following this question, it never notified me that there was your reply. I'm not sure how to fix that for questions going forward??
Bhargavi Naragani 6,365 Reputation points Microsoft External Staff Moderator

2025-07-02T01:03:38+00:00
Hi Zack Frankowski,

I’m really glad to hear that the issue is resolved and assigning the IAM role did the trick. If the answer was helpful and pointed you in the right direction, please consider clicking "Accept Answer" and upvote it—it may benefit other community members reading this thread. If you have any further questions, feel free to let us know.

Regarding your note about not getting notified even though you're following the question: You're absolutely right, sometimes the Microsoft Q&A platform doesn't send real-time notifications as expected. Here are a couple of things might help for future questions:

Check “My Subscriptions” page regularly You can visit: https://learn.microsoft.com/en-us/answers/users/subscriptions This page shows all the threads you're following.

Enable browser notifications (if prompted) Some browsers ask to allow notifications when visiting the site. Enabling them can help you get notified directly.

Bookmark the question link and check back if it’s time-sensitive. Unfortunately, real-time alerts don’t always work reliably depending on account or browser settings.

https://learn.microsoft.com/en-us/answers/support/preferences
Bhargavi Naragani 6,365 Reputation points Microsoft External Staff Moderator

2025-07-07T06:32:40.86+00:00

Hi Zack Frankowski,
Please don’t forget to Accept Answer and Yes for "was this answer helpful" wherever the information provided helps you, this can be beneficial to other community members.

1 answer

Your answer

Zack Frankowski 20 Reputation points

2025-07-01T19:41:30.3266667+00:00

That worked perfectly - I needed to add the IAM role! Thank you so much!!

I noticed even though I'm following this question, it never notified me that there was your reply. I'm not sure how to fix that for questions going forward??
Bhargavi Naragani 6,365 Reputation points Microsoft External Staff Moderator

2025-07-02T01:03:38+00:00

Hi Zack Frankowski,

I’m really glad to hear that the issue is resolved and assigning the IAM role did the trick. If the answer was helpful and pointed you in the right direction, please consider clicking "Accept Answer" and upvote it—it may benefit other community members reading this thread. If you have any further questions, feel free to let us know.

Regarding your note about not getting notified even though you're following the question: You're absolutely right, sometimes the Microsoft Q&A platform doesn't send real-time notifications as expected. Here are a couple of things might help for future questions:

Check “My Subscriptions” page regularly You can visit: https://learn.microsoft.com/en-us/answers/users/subscriptions This page shows all the threads you're following.

Enable browser notifications (if prompted) Some browsers ask to allow notifications when visiting the site. Enabling them can help you get notified directly.

Bookmark the question link and check back if it’s time-sensitive. Unfortunately, real-time alerts don’t always work reliably depending on account or browser settings.

https://learn.microsoft.com/en-us/answers/support/preferences
Bhargavi Naragani 6,365 Reputation points Microsoft External Staff Moderator

2025-07-07T06:32:40.86+00:00

Hi Zack Frankowski,
Please don’t forget to Accept Answer and Yes for "was this answer helpful" wherever the information provided helps you, this can be beneficial to other community members.

Answer 1

Hi Zack Frankowski,

From the error you’re seeing: "BadRequest: Invalid FcmV1 credentials", this usually means Azure is not able to validate the service account credentials due to one of the following common reasons:

Even though the Firebase Cloud Messaging API (V1) is enabled, Azure expects the full, unmodified service account JSON file in a specific format and any deviation (like extracting fields manually or malformed line breaks) will cause this error.

Generate the correct service account key:
- Go to Google Cloud Console – Service Accounts.
- Choose your Firebase project.
- Click “Create Service Account” (or select an existing one).
- Go to Keys => Add Key => Create new key (JSON).
- This will download a .json file with your credentials.
Paste credentials into Azure: In the Azure portal, go to your Notification Hub, Navigate to: Settings => Google (GCM/FCM) Remove any legacy FCM server key if one is present.

Choose the "Firebase Cloud Messaging (V1)" option.
From your downloaded .json: Paste the project_id, client_email, and full private_key exactly as-is (including \n line breaks). Save the configuration.

Make sure the service account has the Firebase Admin SDK role or Editor/Owner permissions under IAM.

Note:

Do not edit or reformat the JSON.
Ensure Firebase Cloud Messaging API (V1) is enabled in Google Cloud Console – APIs & Services.
Avoid pasting individual fields, Azure needs the full-service account format.

https://learn.microsoft.com/en-us/azure/notification-hubs/configure-google-firebase-cloud-messaging

Hope this helps, if you have any further concerns or queries, please feel free to reach out to us.

Bhargavi Naragani 6,365 Reputation points Microsoft External Staff Moderator

2025-07-03T04:02:03.74+00:00

Hi Zack Frankowski,
If the answer was helpful and pointed you in the right direction, please consider clicking "Accept Answer" and upvote it—it may benefit other community members reading this thread. If you have any further questions, feel free to let us know.

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Unable to update FCMV1 credentials on Azure

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