# NousResearch/hermes-agent · Windows codex CLI .CMD lookup errors in subprocess calls

## Open now

- 1 issue, 1 PR open on GitHub.
- #48510: \[Bug\]: Windows — 3 locations fail to find codex.CMD via subprocess.run/Popen (CreateProcess doesn't resolve PATHEXT)
- PR #48522: fix(codex): resolve codex binary via shutil.which so Windows .CMD is found (fixes #48510)

The members share one theme: on Windows, launching the codex CLI via subprocess apparently does not find a .CMD wrapper because PATHEXT is not applied. One is a bug report and two are pull requests proposing to look up the binary path (e.g., via shutil.which); their outcomes are not established here.

## TL;DR

- 3 member(s): 1 open issue(s), 0 closed issue(s), 1 open PR(s), 0 merged PR(s), 1 PR(s) closed without merging.
- No fix has been merged to main; one or more PRs were attempted (see below).
- **Recommended:** review the prior/competing PR(s) below. A fix was attempted but not merged; your case may extend or revive that work.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `unresolved`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
- Pairwise link density `0.67`: the share of member pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. `1.00` means every pair is linked.

## Open related issues

- #48510: \[Bug\]: Windows — 3 locations fail to find codex.CMD via subprocess.run/Popen (CreateProcess doesn't resolve PATHEXT)

## Prior & competing PRs

- **#48522: fix(codex): resolve codex binary via shutil.which so Windows .CMD is found (fixes #48510)**. open
  - maintainer direction: category `uncategorized`; implication `needs_llm`; refs `f2acd3bc8`, `#48651`
  - files: `agent/transports/codex_app_server.py`, `tests/agent/transports/test_codex_app_server_runtime.py`
- **#71696: fix(codex): resolve codex CLI to a launchable path on Windows (#48510)**. closed without merge
  - maintainer direction: category `uncategorized`; implication `needs_llm`; refs `#48522`, `#52083`

## Fix status

- No merged fix on record.
- Subsystem: `agent`