After last update, stuck at “Waiting for extension host”. Cursor Version 3.0 >

Support Bug Reports
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Hey, thanks for the report. This is a known issue, especially on macOS Tahoe after updating to 3.0.13. The team is aware.

Let’s try a couple things to help diagnose it:

  1. Check the contents of cursor-socket:

    ls -la "/Applications/Cursor.app/Contents/Resources/app/extensions/cursor-socket/"

    If you see a dist/ folder instead of out/, create a symlink:

    cd "/Applications/Cursor.app/Contents/Resources/app/extensions/cursor-socket"
ln -s dist out

    Restart Cursor.

  2. If that doesn’t help, try launching from Terminal:

    cursor --disable-extensions

  3. Check if you have MCP servers set up: cat ~/.cursor/mcp.json. If the file exists, paste the contents here.

  4. Try opening a new agent window instead of the current one. For some users this helps as a temporary workaround.

If none of that works, a reliable option is to roll back to 2.6.22. A few users with the same Tahoe bug confirmed 2.6.22 is stable: Cursor last update freeze on macOS

Let me know how it goes.