Solving the Antigravity Authentication Redirect Loop on Windows

Source: Dev.to

Why this happens

This usually occurs because the underlying gaxios library in the Antigravity build is strictly enforcing TLS/SSL verification. In certain Windows network configurations, this handshake fails during the local callback, preventing the Authorization Code from being swapped for an Access Token.

The Step-by-Step Fix

Step 1: Locate the Source File

Open File Explorer and navigate to the local installation directory of the app:

C:\Users\<YourUserName>\AppData\Local\Programs\Antigravity\resources\app\node_modules\gaxios\build\cjs\src\

Step 2: Modify gaxios.js

Open gaxios.js in your preferred text editor.

1. Find the HTTPS requirement line:

const https_1 = require("https");

2. Add the following bypass immediately after it:

process.env.NODE_TLS_REJECT_UNAUTHORIZED = "0";

Step 3: Restart and Authenticate

Save the file and restart your Antigravity client. When you click Sign in with Google this time, the app will successfully capture the redirect from your browser.