Claude Code Extension not loading / initializing in Cursor

[Alexander_Movelidze]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Hey everyone!

Everything had been working perfectly for the past two months, but yesterday, when I tried to launch the Claude Code extension, I started getting this error:

Error: Claude Code process terminated by signal SIGABRT.

I couldn’t find any fix for this issue online.

My system:

macOS Big Sur 11.7.10
Cursor version: 1.7.46
VSCode version: 1.99.3

I tried reinstalling both Cursor and the extension with a full cleanup, but the issue still persists.
The regular Claude Code CLI works fine.

Steps to Reproduce

Steps to reproduce:

1. Open Cursor
2. Enable the Claude Code extension
3. The error appears

Screenshots / Screen Recordings

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.7.46
VSCode Version: 1.99.3
Commit: b9e5948c1ad20443a5cecba6b84a3c9b99d62580
Date: 2025-10-14T01:21:46.830Z (8 hrs ago)
Electron: 34.5.8
Chromium: 132.0.6834.210
Node.js: 20.19.1
V8: 13.2.152.41-electron.0
OS: Darwin x64 20.6.0

Does this stop you from using Cursor

Yes - Cursor is unusable

[deanrie]

Hey, thanks for the report. It looks like the issue is with the Claude Code extension, not a Cursor bug.

Please try:

1. If MCP calls might be involved, try disabling them and run Claude Code again
2. Temporary workaround: use the Claude Code CLI directly while waiting for a fix
3. Or disable the extension so it doesn’t affect your Cursor workflow, Cursor’s built-in AI features will keep working

There’s a related GitHub issue, but no solution yet. I recommend tracking it:

[BUG] Claude Code crashes with SIGABRT during shutdown due to MCP server termination failure

Since this isn’t a Cursor issue, it shouldn’t make Cursor itself unusable, only the Claude Code extension is affected.

[Alexander_Movelidze]

@deanrie

lease try:

1. If MCP calls might be involved, try disabling them and run Claude Code again
2. Temporary workaround: use the Claude Code CLI directly while waiting for a fix
3. Or disable the extension so it doesn’t affect your Cursor workflow, Cursor’s built-in AI features will keep working

There’s a related GitHub issue, but no solution yet. I recommend tracking it:

[BUG] Claude Code crashes with SIGABRT during shutdown due to MCP server termination failure · Issue #7718 · anthropics/claude-code · GitHub

Hi, dearnie!

Thank you so much for your help! I’ll be keeping an eye out for updates or a fix to the root issue.