Stuck in "Further action is required" verification loop / 500 error on signin/continue

Google Antigravity
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1

Hello,

I am unable to access Google Antigravity and Antigravity IDE due to an authentication verification loop.

Description:

When opening Antigravity or Antigravity IDE and clicking Sign in again or Verify, the browser redirects to:
accounts.google.com/signin/continue

It then fails with:

  • “500. That’s an error. There was an error. Please try again later.”
  • Or: “We couldn’t verify your info. Something went wrong and we couldn’t verify your info.”

In the desktop app, it remains stuck on the screen stating:
“Further action is required to use Antigravity / Antigravity IDE - Please verify your account, then sign in again to continue.”

Account Details:

  • Email: ra*********za8@gmailcom (hidden for security)
  • Subscription: Google AI Pro plan active

Troubleshooting steps already attempted:

  1. Revoked and re-granted OAuth access under my Google Account connections (antigravity.google).
  2. Cleared browser cookies/cache for google.com and accounts.google.com.
  3. Tested across multiple browsers (Chrome, Brave) and in clean Incognito/Private sessions.
  4. Cleared local Antigravity application data folders (%APPDATA%\Antigravity, %LOCALAPPDATA%\Antigravity, and ~/.gemini).
  5. Verified 2-Step Verification and account security settings are active with no pending alerts.

It appears the backend entitlement (antigravity_entitled) flag or identity verification token is desynchronized on the server side. Could a member of the engineering team please look into this and reset/re-sync the flag for my account?

Thank you!

2

Hi @Rajmund,

Thank you for the detailed report.

Please check the following remaining items that can cause the accounts.google.com/signin/continue verification redirect to return a 500 or "We couldn't verify your info" error:

  1. Complete Age Verification Directly Before Launching the Redirect: Visit https://myaccount.google.com/age-verification directly in your browser (rather than through the IDE sign-in redirect link) to check if an age verification prompt is pending on your Google Account. If you are able to complete it there, please note that it can take 24 to 48 hours for verification status to propagate across all services.
  2. Verify Google Account Country Association & Disable VPN/Proxy: Check https://policies.google.com/terms (and the country association form) to confirm your account is associated with a supported country or region. If you are using a VPN, proxy, or privacy extension that alters headers or routing during the accounts.google.com/signin/continue step, try completing the verification redirect on a direct connection or mobile network.
  3. Update to the Latest Release & Test Sign-In via Antigravity CLI: Ensure you are running the latest version of Antigravity App (v2.24.0) / Antigravity IDE (v2.5.5) (Changelog), and test whether authenticating via Antigravity CLI (v1.4.2) ) succeeds or returns a specific eligibility message.

If the 500 error on accounts.google.com/signin/continue persists after checking these items, please reply with:

  • Your country/region as shown on https://policies.google.com/terms
  • Whether the same verification error occurs when signing in via Antigravity CLI (v1.4.2) (agy)
  • The approximate timestamp (including timezone) of your most recent failed verification attempt.