Environment: OS: Windows 10/11, build 10.0.26200.8037 Antigravity version: latest installed desktop build Browser: Chrome / Edge Protocol handler check: antigravity:// is registered correctly Result of local test: start antigravity://oauth-success does not throw a Windows protocol err…

Hi Azeem_Aslam, Can you try deleting the Antigravity folder in your %appdata% folder? First Unisntall Antigravity from the Settings > Apps menu. Move to the next step after you uninstall Click on the Start menu Type: %appdata% Press the Enter key on your keyboard Locate the ‘Antigravity’ folder a…

its not solve…still with same issue

Can you tell me the exact protocol error you see?

Same issue here as well. Were you able to resolve it? I have AI Ultra for Business subscription . Started facing 429 errors and tried to logout and login. But cannot login back now. Also have a Personal Pro subscription account but cannot login through that also.

Follow. I’m having the same problem. I can’t log in with my Google account.

I’m having the same problem. I couldn’t use the AI from the start, and now I can’t re-login to my account. Antigravity Version: 1.22.2 VSCode OSS Version: 1.107.0 OS: Darwin arm64 25.3.0

Antigravity Windows login stuck after successful browser auth with BigInt serialization error

Google Antigravity

Ks093 April 13, 2026, 3:37pm 8

I was able to login by rolling back to previous version 1.21.9. Temporary fix until there is an official fix. Just downloaded the last version and installed it on existing installation.

Antigravity login error: “There was an unexpected issue setting up your account” bug. Then also not working for AI models

Topic		Replies	Views
Google Sign-In succeeds in browser, but Antigravity stays on login page and throws TypeError: Do not know how to serialize a BigInt (v1.20.6, Windows) Google Antigravity bug	0	29	March 20, 2026
App freezes after browser auth success: TypeError: Do not know how to serialize a BigInt Google Antigravity models	4	154	March 15, 2026
[Bug] App crashes on login: TypeError: Do not know how to serialize a BigInt (Upgraded Long-dormant AI Pro Account) Google Antigravity bug	3	185	March 27, 2026
Login flow hangs indefinitely after browser authentication (Login fails) Google Antigravity bug , models , help_request	1	100	March 17, 2026
[Bug] Google OAuth completes but login fails — TypeError: Do not know how to serialize a BigInt Google Antigravity bug	1	100	March 18, 2026

Antigravity Windows login stuck after successful browser auth with BigInt serialization error

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