403 PERMISSION_DENIED "Your project has been denied access" — project gen-lang-client-02395052

Gemini API
1

Hello,

Our Gemini API project started returning 403 PERMISSION_DENIED on 2026-08-16.
It had been working normally every day before that, with no code or key changes
on our side.

Project ID     : gen-lang-client-0239505273
Project number : ⚠ (Cloud console > gen-lang-client-0239505273)
API            : generativelanguage.googleapis.com
Model          : gemini-flash-lite-latest
First failure  : 2026-08-16 (KST), and every call since
Billing        : ⚠ (Cloud Billing  "linked, paid tier")
2

Hello @kimjiyoung ,

Our records indicate that this issue should now have been resolved. Please retry your requests or generate a fresh API key in Google AI Studio if needed.

Let us know if the issue is still there.