Has anyone else experienced this issue or noticed similar recurring crashes after the latest Codex Desktop update?
This is not a new issue, similar crashes occurred before the latest update.
The current Codex Desktop version is 26.727.6591.0.
Windows Event Viewer reports:
Crashing process: codex-code-mode-host.exe
Faulting module: ntdll.dll
Exception code: 0xc0000409
The Codex logs also repeatedly show:
ResizeObserver loop completed with undelivered notifications
Invalid JSON containing null bytes
The file .codex\process_manager\chat_processes.json was completely filled with null bytes. After backing it up and removing it, Codex automatically recreated a valid empty JSON file. model_reasoning_summary = "none" was already enabled, so disabling reasoning summaries did not prevent the crashes.
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:
If that issue matches your problem, consider adding a 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.
I know. My main concern is that today’s update keeps crashing repeatedly. While investigating, I also noticed that the chat_processes.json problem still exists. I wanted to know whether anyone else is experiencing the same issues.
The GitHub issues tracker will generally provide more accurate information about how widespread a Codex issue is.
This forum is not the official place to report or track Codex bugs, so we try to redirect these reports to the OpenAI Codex issues tracker. There, users can find related reports, add relevant details, and use a thumbs-up reaction on the issue to indicate that they are also affected.
The main exception is a widespread service disruption—for example, when Codex servers are unavailable and the service stops working for many users. In those cases, this forum tends to light up like a Christmas tree.
Hey @BSMaster, thanks for bringing this up and sharing the detailed crash logs.
Since some time has passed since your original report, I wanted to check whether you're still experiencing these crashes. If you haven't already, please try updating Codex Desktop to the latest available version and check whether the issue persists.
If the crashes continue, please reach out to our support team at support@openai.com so we can investigate further. When contacting support, please include your current Codex Desktop version, installation method (Microsoft Store, MSIX, or managed deployment), Windows version and build, and whether you're using a personal or company-managed device.
These details will help our support team investigate the issue further.
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.