AQ. auth key rejected with 401 across multiple projects

Gemini API
1

Every API key my account generates (auth key, AQ. prefix) is rejected by
generativelanguage.googleapis.com with:

401 UNAUTHENTICATED
“Request had invalid authentication credentials. Expected OAuth 2 access
token, login cookie or other valid authentication credential.”

This happens across MULTIPLE different Google Cloud projects
(project numbers: 9129992530.. and the earlier gen-lang-client-00346105..),
using both the official google_generative_ai Dart SDK and raw REST calls.
Regenerating keys does not help. This appears to be account-level.

Could you please review my account and advise?

2

Hi @Seirokom_Fashion, Please try deleting all old, non-working API keys and then generate a new key directly within the Google AI Studio UI. If you continue to encounter the 401 error with the new key, could you please share the exact cURL command triggering the error (with your API key redacted) so we can investigate this further?