403 PERMISSION_DENIED on new Gemini API projects and keys

[jmyjk]

Hello, I would like to ask for help regarding a persistent Gemini API access issue.

This issue persists even with brand new projects, brand new API keys, and the official minimal Gemini API test.

Problem

When I run the official minimal API test, I consistently receive the following error:

What I already tried

I have already tested the following:

• Created a completely new Google Cloud project

• Created a completely new Gemini API key in Google AI Studio

• Used the official minimal API request with gemini-2.5-flash

• Tested outside of any third-party plugin or application

• Verified that my network exit region is Japan

• Retried with fresh projects and fresh API keys

Additional context

My Google account region is Japan.
I also tested with a Japan exit IP, and the IP location resolves to Tokyo, Japan.

Despite this, the same error still occurs for the minimal API request.

Why I believe this is not a normal configuration issue

This issue still happens even with:

• brand new projects

• brand new API keys

• the official minimal API test

• a supported region network exit

So this does not appear to be caused only by:

• plugin configuration

• old project settings

• model name mismatch

• ordinary rate limits

Request

Could someone please help check whether this may be caused by:

• an account-level restriction

• eligibility verification issues

• automated risk-control review

• or another backend access denial related to Gemini API

Since the same error persists across brand new projects and brand new API keys, this appears to be an account-level or backend access issue rather than a normal project configuration problem.

Thank you very much.

[universal64]

Can you provide a screenshot of the url of the ai studio you are referring to? We strongly recommend if you have programming skills and understand code then that would be the more safer way of doing it. There have also been reports of fake websites posing as the studio. Send as much info as you can and we apologize for the confusion,

Thanks

[jmyjk]

Thanks for the reply.

I can only attach one screenshot in this reply, so I am attaching the AI Studio Playground page with the full browser URL/address bar visible.

It shows that I am using the official Google AI Studio site under the aistudio.google.com domain, rather than an unofficial or fake website.

However, even with a brand new project, a brand new API key, and the official minimal API request, I still consistently receive:

403 PERMISSION_DENIED
Your project has been denied access. Please contact support.

If needed, I can attach an additional screenshot of the Projects page in a follow-up reply.