`codex resume` repeatedly fails with "Timeout waiting for child process to exit"

Open 💬 4 comments Opened Apr 2, 2026 by hizhangwei1205

💡 Likely answer: A maintainer (github-actions[bot], contributor) responded on this thread — see the highlighted reply below.

What version of Codex CLI is running?

0.118.0

What subscription do you have?

API pay-as-you-go

Which model were you using?

gpt-5.3-codex

What platform is your computer?

Debian 13, x86_64

What terminal emulator and version are you using (if applicable)?

MobaXterm

What issue are you seeing?

codex resume fails consistently for one specific session ID. Reconnect retries appear, then it ends with: Timeout waiting for child process to exit. I can see session history, but new prompts never proceed. New sessions work normally, so this seems isolated to the resumed session state.

What steps can reproduce the bug?

Run: codex resume sessionID
Wait for reconnect attempts (Reconnecting...)
Observe failure: Timeout waiting for child process to exit
(Tried mitigation) Find and terminate only the stuck resume-related PIDs via pgrep -af codex + kill, then rerun resume
Same error persists; only this session ID fails while new sessions are fine

What is the expected behavior?

codex resume <session_id> should reconnect successfully, restore an interactive prompt, and allow sending new messages in that resumed session without timing out.

Additional information

_No response_

View original on GitHub ↗

4 Comments

github-actions[bot] contributor · 4 months ago

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

#16278
#16437
#14860
#14783

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etraut-openai contributor · 4 months ago

If you're able to repro, please resume the thread and then use /feedback to upload your logs and session details, then post the thread ID here.

AndrewXiGua · 4 months ago

@etraut-openai

threadId: 019d5287-e006-7c20-85a8-8ab299d53d7e

Necmttn · 2 months ago

This failure needs a session repair path, not only reconnect retries.

When resume times out waiting for a child process, Codex can record child pid/process group, last stream event, last completed rollout offset, and stop reason, then offer resume --repair <id> that marks the dangling turn interrupted and starts after the last completed event.

Otherwise one stuck child poisons an otherwise readable session.

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