Windows desktop repeatedly freezes completely #46964

What version of the Codex App are you using (From “About Codex” dialog)?

Codex 26.915.4065.0

What subscription do you have?

200 Pro

What platform is your computer?

Windows

What issue are you seeing?

I am running version 26.915.4065.0, which is newer than the version containing the fix mentioned above. The entire application window still repeatedly becomes unresponsive, including after restarting. I cannot yet confirm whether this is the same underlying cause or a separate issue.

App version: Codex 26.915.4065.0
Platform: Windows
Date: September 21, 2026 (UTC+8)

Symptoms:
The entire application window becomes unresponsive. Clicking and typing stop working; this is not merely slow model responses.

The issue persists after restarting the app. Two additional freezes occurred shortly before this report. This is severely disrupting normal use.

Confirmed diagnostic findings:

• At 15:51:39 (UTC+8), Windows recorded an Application Hang event
  (Event ID 1002): ChatGPT.exe stopped interacting with Windows.
• The application log from before the restart contained 646 occurrences of:
  “ResizeObserver loop completed with undelivered notifications.”
  The same error continued appearing after the restart.
• UI requests were observed waiting in a queue for approximately 12.7 seconds.
• Runtime version 26.915.20218 had 7 distinct installation failures,
  all reporting checksum_mismatch.

These are diagnostic observations; their causal relationship to the freezes
has not yet been established.

Please investigate the recurring desktop application hangs and runtime
checksum verification failures. Please also advise which additional
diagnostics would help identify the root cause.

What steps can reproduce the bug?

The issue is intermittent; no deterministic trigger has been identified yet.

1. Open Codex Desktop version 26.915.4065.0 on Windows.
2. Open an existing task and use it normally for coding or deployment work involving terminal commands.
3. Continue interacting with the task while it runs.
4. Intermittently, the entire Codex window becomes unresponsive: clicking and typing no longer work. This is not just a task waiting for a model response.
5. Restart the application and resume normal use. The issue can recur; I observed two additional freezes after restarting.

These incidents occurred during workflows involving multiple tasks and worktrees, but I have not established whether either is required to trigger the bug.

What is the expected behavior?

No response

Additional information

No response