Cursor Agent gets stuck while exploring files and never generates a code change on macOS 27

Support Bug Reports
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19

Same issue here — stuck in Exploring/Grepping, times out with “extension host is not running or is unresponsive,” on macOS 27 (Apple Silicon). Wanted to add this because Rosetta did not fix it for me, unlike the other reports in this thread.

Console error (DevTools):

[anysphere.cursor-retrieval] spawn Unknown system error -86
Error: spawn Unknown system error -86
	at ChildProcess.spawn (node:internal/child_process:441:11)
	at Object.spawn (node:child_process:810:9)
	at Object.w [as spawn] (file:///Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/api/node/extensionHostProcess.js:740:1610)
	at r (/Applications/Cursor.app/Contents/Resources/app/extensions/cursor-retrieval/dist/main.js:2:2164268)
	at /Applications/Cursor.app/Contents/Resources/app/extensions/cursor-retrieval/dist/main.js:2:2164545
	at ChildProcess.exithandler (node:child_process:410:7)
	at ChildProcess.emit (node:events:509:28)
	at maybeClose (node:internal/child_process:1124:16)
	at Socket.<anonymous> (node:internal/child_process:481:11)
	at Socket.emit (node:events:509:28)
	at Pipe.<anonymous> (node:net:351:12)

Request IDs from separate hangs: 478a089b-f302-4f0d-8f3a-94ff877c8718, 3738952d-3b97-4ce5-935b-dde8acf5eec7

Reproduces on one Mac only — identical Cursor build, same account, same model (Grok 4.6, High effort), does notreproduce on my other Mac (also macOS 27, same Cursor version).

Already ruled out on the affected machine:

  • Full Disk Access — not granted on either Mac, not the differentiator
  • Bad-architecture rg binary — confirmed valid universal Mach-O (x86_64 + arm64)
  • Quarantine attribute on rg — none present
  • Rosetta 2 — confirmed installed and working; reinstalling via softwareupdate --install-rosetta did not help
  • Local grep hang — ps aux during a hang showed no rg process running at all
  • “Index Repositories for Instant Grep (BETA)” — disabled, no change
  • git/Xcode Command Line Tools — /usr/bin/git works fine (2.54.0), CLT properly installed
  • Old shadowing git binary at /usr/local/bin/git (leftover x86_64/i386-only binary from a pre-Apple-Silicon install) — found and removed, no change
  • git.path setting explicitly forced to /usr/bin/git — no change
  • Relaunching Cursor from Terminal (/Applications/Cursor.app/Contents/MacOS/Cursor &) to force correct PATH inheritance — no change

Cursor Agent Exec output log from a fresh reproduction (this run didn’t show the -86 error in this particular channel — only in DevTools Console — but included for completeness; note the repeated mount alias add with growing gaps at the end, 0.5s then 7.9s, which looks like a retry/backoff on the agent store sync mount rather than a crash):
2026-09-19 13:30:22.056 [info] rg_diagnostics.startup {“rgPath”:“/Applications/Cursor.app/Contents/Resources/app/node_modules/@vscode/ripgrep/bin/rg”,“rgPathExists”:true,“rgParentDirExists”:true,“platform”:“darwin”,“arch”:“arm64”,“nodeVersion”:“v24.18.1”,“extensionPath”:“/Applications/Cursor.app/Contents/Resources/app/extensions/cursor-agent-host”,“execPath”:“/Applications/Cursor.app/Contents/Frameworks/Cursor Helper (Plugin).app/Contents/MacOS/Cursor Helper (Plugin)”,“uiKind”:“desktop”,“rgFileSize”:8516368,“rgFileMode”:“100755”,“rgIsFile”:true,“parentDirContents”:[“rg”],“grandparentDirExists”:true,“grandparentDirContents”:[“LICENSE”,“bin”,“build”,“jsconfig.json”,“lib”,“node_modules”,“package.json”]}

Debug data zip (Logs, Feature flags/extensions, Process diagnostics) attached separately — happy to send the rest if useful.

debugging-data-1789850078812.zip (619.6 KB)

Operating System: macOS 27 (Golden Gate), Apple Silicon (M1 Max Mac Studio)
Version Information: Cursor: 3.21.13 (Universal)
Model: Cursor Grok 4.6, Effort: High, Fast: on
Does this stop you from using Cursor: Yes

Let me know what else would help narrow this down — happy to test anything.