Codex desktop app crashes on Windows ARM64 due to SerialPort native module

Codex
1

The Codex desktop app consistently crashes shortly after startup on Windows ARM64.

Environment

  • Windows ARM64
  • OpenAI Codex 26.707.9981.0 ARM64
  • The app worked normally for several days before the problem started.

Behaviour

  • The interface appears briefly, then the entire app closes.
  • Several ChatGPT.exe processes start and disappear.
  • Reinstalling, repairing, resetting, clearing caches and disabling GPU acceleration do not help.
  • The crash also occurs with a clean .codex directory, without restoring a workspace or previous thread.

Crash details

  • Exit/exception code: 0xC06D007F
  • Crashpad points to:

@serialport/bindings-cpp/prebuilds/win32-arm64/node.napi.node

  • The module is loaded through:

@worklouder/device-kit-oai
CodexMicroService
codexMicro.getState()

This appears to be a delay-load “procedure not found” failure in the ARM64 SerialPort native addon. The built-in
browser starts around the same time, but clearing its cache and attempting to disable it does not change the crash.

Could OpenAI disable CodexMicro for affected ARM64 builds or ship a corrected win32-arm64 native module?

2

Welcome to the forum!

You are welcome to discuss Codex issues on the forum, however the official place to report and track them is the GitHub issue tracker for OpenAI Codex.

I had ChatGPT look for the closest related issue and it identified:

That appears to be a hot issue with other leaving comments in the last few hours.

If that issue matches your problem, consider adding a :+1: reaction on the GitHub issue page itself, not just on the forum topic, as reactions on GitHub help the developers gauge impact and prioritize work.

If it is not the same issue, try searching the existing GitHub issues for a closer match. If you cannot find one, then open a new issue with as much detail as possible.

3

Yes, that’s it, thank you!

4

Hope you stick around. We’ve got a great community here! :slight_smile:

Thanks, @EricGT !

5

Subject: Windows ARM64/Snapdragon: Codex Desktop crashes on startup (0xC06D007F)

Codex Desktop crashes immediately on startup on a Windows ARM64 (Snapdragon) device.

Crash exception code: 0xC06D007F.

It appears to occur while delay-loading @serialport/bindings-cpp, a dependency of device-kit, where the Node-API export symbol napi_module_register cannot be found.

Please confirm whether this is caused by an ARM64 build issue or a server-side feature flag, and provide a fix or temporary work around.

6

The same crash happens on Windows x64 — but with a different surface symptom that may help narrow the cause.

Environment

  • Windows 11 x64 (build 26200)
  • OpenAI Codex 26.707.9981.0 x64
  • NVIDIA GeForce RTX 4060 Laptop GPU
  • App was stable for several weeks before July 15

Behaviour
Unlike the ARM64 report where the app dies immediately, on x64 the app stays open but the UI freezes for 2–5 seconds at a time — clicking a conversation, typing, even hovering buttons all stall. The freezes repeat in a loop. Each one lines up with a silent ChatGPT.exe background crash.

Over 24 hours this produced 30+ crash dumps, each ~12 MB, totalling roughly 360 MB of disk writes that made the UI lag even worse.

Crash details
Everything matches the ARM64 report except the platform:

  • Exception: 0xC06D007F
  • Faulting binary: @serialport/bindings-cpp/prebuilds/win32-x64/node.napi.node
  • Load chain: @worklouder/device-kit-oai → CodexMicroService → codexMicro.getState()

What was tried (no change)

  • Clean .codex directory, archived 200+ conversations, disabled 9 of 14 plugins
  • Installed latest VC++ 2015–2022 Redistributable (14.44)
  • Disabled GPU acceleration, cleared all caches, reinstalled the app
  • VCRUNTIME140_1.dll is present and up to date — this is not a missing runtime issue
  • Disabled Windows Error Reporting dumps for ChatGPT.exe (stops the I/O stall, does not stop the crash)
7

I am experiencing the same issue on ARM64.

Hardware: Lenovo Yoga Slim 7x (Qualcomm Snapdragon X Elite, ARM64)

OS: Windows 11 Version 23H2

App version: OpenAI.Codex 26.707.9981.0 (ARM64, Microsoft Store)

Symptoms:

  • The ChatGPT desktop app opens for about one second and immediately closes.
  • ChatGPT Classic worked on the same machine.
  • Resetting the app did not help.
  • Reinstalling did not help.
  • Windows recognizes the package correctly.

Troubleshooting performed:

  • Verified native ARM64 package is installed.
  • Verified AppModel-Runtime successfully creates the AppX container and then immediately destroys it.
  • No Application Error or Windows Error Reporting crash event is generated.

This appears consistent with the ARM64 startup issue others are reporting.

8

same here on my Asus Zenbook (ARM64)

9

same here on my HP windows 11. mine started after i gave it quite a tough prompt and i felt like i overloaded it but not sure, i go to open codex and after a couple seconds it crashes. tried repairing, terminating and resetting yet still nothing.