Android Question Problem With Google Authentication - Play Store Certificates - Solved!!!

This message means that the key used to sign the new APK is different than the key that signed the currently install APK.

Uninstalling the APK and installing the new one will solve it, assuming that you are now using the correct key.

Hi Erel, sorry I respond too late, I thought my original reply and explanation was send over here, however checking today I realized it was empty (never send).

I wrote a complete steps about what was wrong. But I am very interested to everyone can get help from this, so here the revised version,

Problem using Google Authentication for Apps in Play Store:

In adition to put my app SHA1 key in firesbase authentication, I also have to get the SHA1 key from google's play console


and put it in firebase authentication, after this I have to download the json file "google_services.json" , and put in directory app, compile and submit a new version.


Don't forget download json file for your app



After that everthing wend fine

Thanks Erel and Greeting to the community

Best Regards