Error 403 Restricted Client with Google Signin in Flutter

Question

I\'ve setup firebase_auth and google_signin about 6 times, but in my latest app I must have forgotten a step.

firebase_auth: ^0.11.1 google_sign_in: ^4.0.1+3

Answer 1

In my case I forgot to set support e-mail address in Google Developers Console > API and service > certificate > OAuth consent screen link and this option also in your Firebase project setting .After set up then everything is working.

Answer 2

This is crazy, it didn't work even after I setting support email. But once I uploaded the logo image, it works.

Go to the link showing in error page, and set both logo and email.

Answer 3

Had a similar problem with an angular project. The solution was indeed to set a support email address in the firebase console project settings under the general tab.

Answer 4

I set the support e-mail address and the LOGO in Google :

Developers Console > API and service > Credential > Oauth Consent Screen.

After this set up all is working.