Android auth firebase error: Local module descriptor class for com.google.firebase.auth not found

Android auth firebase error: Local module descriptor class for com.google.firebase.auth not found

Option 1: Go to Firebase Console < Authentication < SIGN-IN METHOD, and see if you are using it in the Anonymous state. If you are, disable that and enable Email/Password or whichever login method you are using.

Option 2: Check if the device you are testing with is running Google Play Services 9.0.0 or later.

Add a log in onComplete() listener of createUserWithEmailAndPassword() to see what exactly is the reason behind the failure.

   if (!task.isSuccessful()) {
    Log.e(TAG, onComplete: Failed= + task.getException().getMessage()); 
    }

This can be due to the password or email you entered to create an account.
Check:

• if the email you entered is in proper format and does exist.
• if password is strong enough to be accepted (usually not less than 6 letters).
• if there is already an account with the same email.

Android auth firebase error: Local module descriptor class for com.google.firebase.auth not found

In my case, I was debugging the application and was missing the SHA1 Key in my firebase project configuration. If you are debugging make sure you have your SHA1 Key in place.