[codex] Codex Windows desktop app hangs during startup before Codex logging initializes

## Observed symptom Codex Windows desktop app hangs during startup before Codex logging initializes ### What version of the Codex App are you using (From “About Codex” dialog)? Most recent/just updated and can't access app ### What subscription do you have? Pro ### What platform is your computer? Windows 11 Home, 64-bit Windows build: 26200 UBR: 9550 WER OS version: 10.0.26200.[ip].101 ### What issue are you seeing? ## Summary The new ChatGPT/Codex Windows desktop app consistently hangs during startup on my Windows 11 PC. The application remains on the spinning startup screen and Windows subsequently records a `MoAppHang`. The failure occurs before the normal Codex diagnostics appear to initialize: - No `.codex\.sandbox\sandbox.log` - No `.codex\log` output, even with an ## Literal error text ``` MoAppHang ``` ## Environment GitHub openai/codex #48594 ## Trigger / context ### What version of the Codex App are you using (From “About Codex” dialog)? Most recent/just updated and can't access app ### What subscription do you have? Pro ### What platform is your computer? Windows 11 Home, 64-bit Windows build: 26200 UBR: 9550 WER OS version: 10.0.26200.[ip].101 ### What issue are you seeing? ## Summary The new ChatGPT/Codex Windows desktop app consistently hangs during startup on my Windows 11 PC. The application remains on the spinning startup screen and Windows subsequently records a `MoAppHang`. The failure occurs before the normal Codex diagnostics appear to initialize: - No `.codex\.sandbox\sandbox.log` - No `.codex\log` output, even with an explicit `log_dir` - No session transcript created under `.codex\sessions` - Setting the Windows sandbox to `unelevated` does not resolve the problem - Disabling the private sandbox desktop does not r ## Source evidence - https://github.com/openai/codex/issues/48594 (2026-09-27T02:09:53Z) — #48594 ## Freshness - classification: FRESH_7D - retrieved_at: 2026-10-02T09:52:00.922591Z - scout_id: Cb23d312294 ## Scout notes This Problem was published by the KFA Fresh Friction Scout from public sources. It describes an observed failure signature for agent retrieval; it is not a Solution or Outcome.