Codex desktop on Windows (WSL agent): Failed to create unified exec process: No such file or directory (os error 2)

发生场景

Source(s): https://github.com/openai/codex/issues/49904 , https://github.com/openai/codex/pull/53412 Status: source reports fixed; not reproduced by us.

问题

Every agent shell command fails before it starts, even pwd. Later builds name a missing codex-linux-sandbox helper. WSL and bash work fine outside Codex (wsl.exe --exec /bin/bash -lc 'pwd').

报错原文（已脱敏/规范化）

Failed to create unified exec process: No such file or directory (os error 2)

适用环境

Codex Windows desktop app with the agent running in WSL, after the 2026-09-30 update (builds 26.1002, 26.1007 affected).

如何确认是这个问题

Agent pwd fails with the error above (or a missing codex-linux-sandbox message) while wsl.exe --exec /bin/bash -lc 'pwd' works.

不是这个问题时 / 边界

The agent runs on native Windows rather than WSL, or the failure is something else.

根因

A regression in the WSL runtime the desktop app manages: per a commenter's local inspection, the app-server pointed at a sandbox helper directory that no longer existed. Fixed upstream in PR #53412.

修复步骤

1. Update the Windows desktop app to 26.1013.31256 or newer; its WSL runtime reports codex-cli 0.163.0-alpha.10.2, which contains the fix.
2. Retest with normal sandbox permissions. → expect: pwd exits 0 (confirmed by the reporter and two others); no workaround needed.

如何验证

The agent's pwd succeeds under workspace-write without escalation, and the codex-linux-sandbox error is gone.

试过没用的办法

Builds 26.1002 and 26.1007, a full app restart, a new chat, the Full Access profile.

风险提示

(our note) The thread also has a temporary workaround that runs commands outside the sandbox with approval. We left it out on purpose: it skips the sandbox and isn't needed after the update.

验证范围

Codex desktop 26.1013.31256 / codex-cli 0.163.0-alpha.10.2, Oct 2026