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Codex Issues / #38202

Windows Codex Desktop repeatedly shows main-process error "Error: write EOF" after update

Open 💬 2 comments Opened Aug 12, 2026 by Araaniart
💡 Likely answer: A maintainer (github-actions[bot], contributor) responded on this thread — see the highlighted reply below.

What version of Codex is running?

  • Codex Desktop for Windows (Microsoft Store)
  • Package version: 26.803.10989.0
  • Architecture: x64

What is happening?

Since updating the Codex Windows desktop app, a modal error appears frequently at unrelated points during normal use. The app had not shown this error before the update.

Exact dialog text:

A JavaScript error occurred in the main process

Uncaught Exception:
Error: write EOF
    at WriteWrap.onWriteComplete [as oncomplete]
    (node:internal/stream_base_commons:87:19)

The error is not tied to one project action: it can appear at different times while using the app.

Troubleshooting already tried

  • Used Windows Settings > Apps > Codex > Advanced options > Repair (Восстановить)
  • Fully restarted the app / Windows

Repair did not resolve the issue. A full app reset was deliberately not attempted because preserving local Codex history and settings is important.

Expected behavior

Codex should handle a closed internal stream/child process without surfacing a recurring uncaught main-process exception to the user.

Impact

The error interrupts work repeatedly and began immediately after the update. It does not appear to be caused by a particular repository or action.

View original on GitHub ↗

2 Comments

github-actions[bot] contributor · 15 days ago

Potential duplicates detected. Please review them and close your issue if it is a duplicate.

  • #38062

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rajks85 · 6 days ago

Update from an affected Windows user:

  • Current Microsoft Store Codex Desktop build: 26.818.2441.0, x64.
  • The exact main-process dialog still recurs after updating Codex and performing a full app restart:
A JavaScript error occurred in the main process

Uncaught Exception:
Error: write EOF
    at WriteWrap.onWriteComplete [as oncomplete]
    (node:internal/stream_base_commons:87:19)

It appears when Codex tasks/automations start, hangs the Desktop UI, and can disable remote control. It is not limited to one repository or one user action.

Please confirm whether #38202 covers this current build and triage it with #35985 (browser-sidebar EPIPE -> write EOF) and #38062 (Git-review cancellation -> write EOF). The app should treat closed IPC/child streams as recoverable disconnects rather than surfacing an uncaught Electron main-process exception.