Error 12500 on Google Sign In

Step 1: Are you in the right place?

Yes

Step 2: Describe your environment

• Android Studio version: 3.4.2
• Firebase Component: Authentication
• Component version:

    implementation 'com.google.firebase:firebase-auth:18.0.0'
    implementation 'com.google.android.gms:play-services-auth:17.0.0'

Step 3: Describe the problem

I used this code as it is without any change.

I created a new Firebase project, then I performed all the important steps:

• Used Latest Google Play support libraries and Firebase libraries
• Added DEBUG SHA-1 Key in console
• Enabled Google Sign-In Method
• Added support email for authentication.
• Checked that my device is having the latest Google Play Services installed.

After performing this, downloaded latest google-services.json and imported in the project. Though it is showing me error 12500.

Then, I again checked the Google Cloud API Console OAuth2.0 page and checked my URL and it’s correct.

After this, I created 3 different projects, with different accounts and performed the same things again and again. Though I didn’t get success. Please Help me in that issue. I tried all other authentications like PhoneAuth, EmailAuth, etc. But an error occurs in Google Sign-In only.

Steps to reproduce:

While signing in with Google, It fails and then here is a log.

2019-07-26 07:54:38.432 31194-31194/com.example.firebaserecyclerpagination W/GoogleActivity: Google sign in failed
    com.google.android.gms.common.api.ApiException: 12500: 
        at com.google.android.gms.common.internal.ApiExceptionUtil.fromStatus(Unknown Source)
        at com.google.android.gms.auth.api.signin.GoogleSignIn.getSignedInAccountFromIntent(Unknown Source)
        at com.google.firebase.quickstart.auth.kotlin.GoogleSignInActivity.onActivityResult(GoogleSignInActivity.kt:76)
        at android.app.Activity.dispatchActivityResult(Activity.java:7109)
        at android.app.ActivityThread.deliverResults(ActivityThread.java:4192)
        at android.app.ActivityThread.handleSendResult(ActivityThread.java:4239)
        at android.app.ActivityThread.-wrap20(ActivityThread.java)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1599)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:165)
        at android.app.ActivityThread.main(ActivityThread.java:6375)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:912)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:802)

Relevant Code:

I used this code as it is without any change.

[PatilShreyas]

Oh okay. Thanks.

[samtstern]

@PatilShreyas can you try setting an email and logo in the “OAuth consent screen” settings in the Google Cloud console?