Error 403: access_denied. The app has not completed the Google verification process

  • Google sign-in
  • OAuth

What it means

Your Google sign-in is still in Testing mode, which only lets listed test users in. Everyone else is turned away.

Why it happens

  • The OAuth consent screen is set to Testing, and the user is not on the test user list.
  • The app asks for sensitive scopes that need Google's review.

How to fix it

  1. Add test users for now, or publish the app in Google Cloud's OAuth consent screen.
  2. Ask only for basic scopes (email, profile) so publishing needs no review.
  3. Fill in the app name, logo and privacy policy link before publishing.

Let your AI find the cause

Paste this into Claude Code, Cursor, Lovable or whichever AI built your app. It looks first and changes nothing until you have read the answer.

Google sign-in in my app fails with 'Error 403: access_denied'. Tell me which Google scopes this project requests and whether any of them need Google's verification, and list what I should check on the OAuth consent screen.