Google says "This app is blocked" when I add Google Drive. How do I fix it?
Short answer: Some Google accounts only allow approved apps. Open Advanced — custom sign-in credentials in Add Account, follow Show me how to create your own Client ID and Client Secret in Google's console (about five minutes), paste them in and sign in again.
Use your own sign-in credentials. Some Google accounts — especially work and school accounts — only allow apps their admin or their owner has approved. Creating your own Google sign-in credentials means you approve yourself, and the block page goes away.
- In Add Account, open Advanced — custom sign-in credentials under the Google Drive option.
- Click Show me how (in-app guide) and follow the steps in Google's own console. It takes about five minutes the first time.
- Paste the Client ID and Client Secret into the two fields.
- Click Open browser to sign in as normal.
The same credentials work for every Google Drive account you add. More in custom sign-in credentials.