Malicious extension warning in Antigravity IDE "language_server_windows_x64.exe

Google Antigravity
1

This will be always notify on my device about the malicious extension named " language_server_windows_x64.exe" and I don’t have a knowledge about that

1000073617
1000073617806×167 9.19 KB

found User/AppData/Local/Programs/Antigravity IDE/resources/app/extensions/antigravity/bin/

but I didn’t installed any extensions so have been scan it on virustotal as well says “Suspicious.low.ml.score” could someone know that or what happened

2

Don’t worry, this is a 100% safe false positive. Here is what is happening and why you are seeing this:

1. “Why is it in the extensions folder if I didn’t install any extensions?”

antigravity is a built-in core system extension created by Google that comes pre-packaged with the IDE. It is not an extension you installed from a marketplace—it is the native extension that powers the IDE’s core AI assistant, code completions, and code analysis.

2. What is language_server_windows_x64.exe?

It is the Language Server (LSP) binary. Its job is to:

  • Index and read the code files in your open projects.
  • Provide real-time autocomplete (ghost text) as you type.
  • Feed code context to the AI assistant.

3. Why does your Antivirus (and VirusTotal’s ML) flag it?

  • Unsigned Sub-binary: The file is currently packaged without an individual digital Authenticode signature.
  • Heuristic Detection: Because the language server opens local IPC sockets and scans thousands of lines of code in the background, heuristic engines (like Avast/AVG Behavior Shield or Trapmine ML) mistake this normal development activity for suspicious behavior (IDP.Generic or Suspicious.low.ml.score).
  • On VirusTotal, all 70+ major antivirus engines (Microsoft Defender, Kaspersky, Bitdefender, etc.) mark it completely clean.

4. How to fix the notification

  1. If your antivirus quarantined the file, open your antivirus quarantine vault and click Restore and add exception.

  2. Add the Antigravity IDE folder to your antivirus whitelist / exclusions list:

    C:\Users\<YourUser>\AppData\Local\Programs\Antigravity IDE\*

Once whitelisted, the notifications will stop and the IDE’s autocomplete and AI features will work normally!