Error 403 when sending a request to Antigravity

Google Antigravity
1

When I try to send a request to Antigravity, I get an error.

Trajectory ID: fe4e952d-cb24-4feb-a056-1d0aafd1…

Error: HTTP 403 Forbidden

Sherlog:

TraceID: 0x72a8a691ac0…

Headers: {“Alt-Svc”:[“h3=\”:443\“; ma=2592000,h3-29=\”:443\“; ma=2592000”],“Content-Length”:[“896”],“Content-Type”:[“text/event-stream”],“Date”:[“Fri, 28 Aug 2026 01:02:09 GMT”],“Server”:[“ESF”],“Server-Timing”:[“gfet4t7; dur=54”],“Vary”:[“Origin”,“X-Origin”,“Referer”],“X-Cloudaicompanion-Trace-Id”:[“72a8a691ac0ba68”],“X-Content-Type-Options”:[“nosniff”],“X-Frame-Options”:[“SAMEORIGIN”],“X-Xss-Protection”:[“0”]}

{

“error”: {

"code": 403,

"details": \[

  {

    "@type": "type.googleapis.com/google.rpc.ErrorInfo",

    "domain": "cloudaicompanion.googleapis.com",

    "metadata": {

      "error_number": "1001",

      "uiMessage": "true"

    },

    "reason": "SUBSCRIPTION_REQUIRED"

  },

  {

    "@type": "type.googleapis.com/google.rpc.Help",

    "links": \[

      {

        "description": "Learn more",

        "url": " https://cloud.google.com/gemini/docs/codeassist/request-license "

      }

    \]

  }

\],

"message": "You do not have a valid license of this product. Please contact your administrator to request a license. If you are not an enterprise user and believe you are receiving this message as an error, please try using the latest version and logging in again. (#3501)",

"status": "PERMISSION_DENIED"

}

}

2

Hi @Pochemu,

Could you please follow these steps:

  • Clean Re-Authentication in an Isolated Browser Profile:

    • Sign out of Antigravity.

    • Open an Incognito / Private Window where only your personal Google account is signed in.

    • Go to https://myaccount.google.com/connections, locate Google Antigravity / Google Cloud Code, and click Remove Access.

    • Return to Antigravity and initiate the sign-in flow through that isolated browser window.

  • Clear Local Cache & Stale Config Files:

    • Windows:

      • Fully close Antigravity (IDE & CLI processes).

      • Delete or rename the following directories:

        • `%USERPROFILE%\.gemini`

        • `%USERPROFILE%\.antigravity`

        • `%APPDATA%\Antigravity`

        • `%LOCALAPPDATA%\Antigravity`

    • macOS / Linux:

      • Fully quit Antigravity.
      • In your terminal, run:
        • rm -rf ~/.gemini ~/.antigravity ~/Library/Application\ Support/Antigravity ~/Library/Caches/Antigravity

    • Relaunch Antigravity and sign in again.

  • Check Network & VPN Settings

    • If you are connected to a VPN, custom DNS, or corporate proxy, try temporarily disconnecting or testing on a standard mobile hotspot / home network.

  • If the steps above do not resolve it, could you please share following details:

    • Trajectory ID