Firebase UI Google Authentication Failing (Code 10, Message 10): How Do I Fix This Post-Release?

Firebase UI Google Authentication Failure: Understanding Code 10, Message 10

If you encounter the message "code:10 message:10" when attempting Google authentication in a Firebase UI-powered chat app, particularly after downloading it from the Play Store, it indicates an authentication issue. While authentication works smoothly in debug mode, it fails when the app is released, leaving users puzzled.

To resolve this problem, it's crucial to possess three key fingerprints:

1. Debug key: This key is generated automatically when you run the app in debug mode.
2. Release key: This key is obtained when you build the app for release.
3. Google Play App signing key: This key is used to sign the app bundle that is uploaded to the Play Store.

All three keys are essential for successful sign-in. Without all three correctly registered with Firebase, authentication will fail, resulting in the code 10, message 10 error.

Refer to the following resources for detailed instructions on obtaining each key:

• [Debug key](https://www.example.com/debug-key)
• [Release key](https://www.example.com/release-key)
• [Google Play App signing key](https://www.example.com/google-play-signing-key)
• [Additional information](https://www.example.com/additional-info)

Once all three keys are registered appropriately with Firebase, the sign-in process should function seamlessly.

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