Windows sandbox setup refresh fails with os error 740 for shell commands
Resolved 💬 2 comments Opened Jun 9, 2026 by martinmclee Closed Jun 9, 2026
💡 Likely answer: A maintainer (github-actions[bot], contributor)
responded on this thread — see the highlighted reply below.
### Summary
Shell commands executed via Codex (example: rg --files) now fail immediately with:execution error: Io(Custom { kind: Other, error: "windows sandbox: spawn setup refresh" }).
Running the same commands directly outside Codex succeeds, so this appears to be a Windows sandbox setup regression.
Observed log pattern
setup refresh: failed to spawn codex-windows-sandbox-setup.exe: The requested operation requires elevation. (os error 740)- Repeats on each command invocation before command output.
Versions
codex-cli:0.137.0- Windows sandbox mode is configured as
elevated
If helpful I can provide a full reproduction timeline.
2 Comments
Potential duplicates detected. Please review them and close your issue if it is a duplicate.
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Duplicate of #26158. This appears to be the same elevated sandbox regression with spawn setup refresh + os error 740 and command execution failing before running the payload.
Please continue tracking on #26158.