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I am going round in circles with Firebase UI for authentication.

I am using some code I have used previously, which worked OK, which is pretty much based on the samples.

My issue is when using either EmailBuilder orGoogle Builder, my attempts to authenticate from a hardware device give the error:

E/AuthUI: A sign-in error occurred.
com.google.firebase.FirebaseException: An internal error has occurred. [ Identity Toolkit API has not been used in project xxxxxx before or it is disabled...

I've verified the Firebase Sign-in methods and SHAs are set up correctly.

Versions: com.google.gms:google-services: 4.1.0 com.android.support:appcompat-v7: 27.1.1 com.android.support:design: 27.1.1 com.android.support:customtabs: 27.1.1 com.android.support:cardview-v7: 27.1.1 com.google.firebase:firebase-core: 16.0.1 com.google.firebase:firebase-database: 16.0.1 com.google.firebase:firebase-auth: 16.0.3 com.firebaseui:firebase-ui-auth: 4.0.0 com.google.android.gms:play-services-auth: 15.0.1

I've lost a few hours on this already. Any help appreciated.

KENdi
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CoastalB
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  • Possible duplicate of [Error: Google id\_token is not allowed to be used with this application. Firebase access fails after it was working](https://stackoverflow.com/questions/40450850/error-google-id-token-is-not-allowed-to-be-used-with-this-application-firebase) – olajide Aug 16 '18 at 16:25
  • found any solutions? – Febin Mathew Oct 26 '18 at 10:11
  • @FebinMathew - it was an optional part of a course assignment submission. In the end, due to time constraints, I had to abandon the use of EmailBuilder. – CoastalB Oct 29 '18 at 12:06

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