I'm using Antigravity IDE 2.6.0 on Windows 11.
After launching Antigravity, I click Sign in with Google. Google authentication completes successfully in Chrome, but when it returns to Antigravity, I get:
There was an unexpected issue setting up your account.
The error includes:
dial tcp 127.0.0.1:1443: connect:
No connection could be made because the target machine actively refused it.
Troubleshooting already performed
I've tried the following:
Completely uninstalled and reinstalled Antigravity from the official website.
Ran Antigravity as Administrator.
Restarted Windows multiple times.
Checked Task Manager — Antigravity processes are running normally.
Confirmed Antigravity is installed at: C:\Users<username>\AppData\Local\Programs\antigravity\Antigravity.exe
Checked port 1443 with netstat — nothing is listening on 127.0.0.1:1443.
Confirmed Antigravity does listen on another local port (127.0.0.1:57119).
Checked Windows WinHTTP proxy — Direct access (no proxy server).
Checked HTTP_PROXY and HTTPS_PROXY environment variables — neither is configured.
Checked Windows Firewall.
Chrome and Google services work normally over my Airtel Fiber connection.
Tried signing in with a different Google account — same error.
Cleared the Antigravity updater cache.
Found the following entries in the Windows hosts file: 127.0.0.1 daily-cloudcode-pa.googleapis.com 127.0.0.1 cloudcode-pa.googleapis.com
Commented out those entries and flushed DNS with ipconfig /flushdns — same error.
Reset/removed Antigravity AppData — same error.
The Antigravity logs also showed updater errors including: HttpError: 400 and sha512 checksum mismatch.
Expected behavior
After successful Google authentication, Antigravity should complete account setup and open the IDE.
Actual behavior
Google authentication succeeds, but Antigravity fails to complete account setup because it attempts to connect to:
127.0.0.1:1443
and the connection is refused.
Could you please advise what local Antigravity service is supposed to listen on port 1443, and why it is not starting on Windows 11?
This is blocking me from using Antigravity for an upcoming hackathon, so any workaround or fix would be greatly appreciated.
Antigravity version: 2.6.0
OS: Windows 11
Network: Airtel Fiber
I'm using Antigravity IDE 2.6.0 on Windows 11.
After launching Antigravity, I click Sign in with Google. Google authentication completes successfully in Chrome, but when it returns to Antigravity, I get:
There was an unexpected issue setting up your account.
The error includes:
dial tcp 127.0.0.1:1443: connect:
No connection could be made because the target machine actively refused it.
Troubleshooting already performed
I've tried the following:
Completely uninstalled and reinstalled Antigravity from the official website.
Ran Antigravity as Administrator.
Restarted Windows multiple times.
Checked Task Manager — Antigravity processes are running normally.
Confirmed Antigravity is installed at: C:\Users<username>\AppData\Local\Programs\antigravity\Antigravity.exe
Checked port 1443 with netstat — nothing is listening on 127.0.0.1:1443.
Confirmed Antigravity does listen on another local port (127.0.0.1:57119).
Checked Windows WinHTTP proxy — Direct access (no proxy server).
Checked HTTP_PROXY and HTTPS_PROXY environment variables — neither is configured.
Checked Windows Firewall.
Chrome and Google services work normally over my Airtel Fiber connection.
Tried signing in with a different Google account — same error.
Cleared the Antigravity updater cache.
Found the following entries in the Windows hosts file: 127.0.0.1 daily-cloudcode-pa.googleapis.com 127.0.0.1 cloudcode-pa.googleapis.com
Commented out those entries and flushed DNS with ipconfig /flushdns — same error.
Reset/removed Antigravity AppData — same error.
The Antigravity logs also showed updater errors including: HttpError: 400 and sha512 checksum mismatch.
Expected behavior
After successful Google authentication, Antigravity should complete account setup and open the IDE.
Actual behavior
Google authentication succeeds, but Antigravity fails to complete account setup because it attempts to connect to:
127.0.0.1:1443
and the connection is refused.
Could you please advise what local Antigravity service is supposed to listen on port 1443, and why it is not starting on Windows 11?
This is blocking me from using Antigravity for an upcoming hackathon, so any workaround or fix would be greatly appreciated.
Antigravity version: 2.6.0
OS: Windows 11
Network: Airtel Fiber