codex Windows desktop app chat accepts messages but assistant never responds
Open 💬 0 comments Opened Jul 18, 2026 by meatrong
What version of the Codex App are you using (From “About Codex” dialog)?
26.715.31251
What subscription do you have?
ChatGPT Pro
What platform is your computer?
Microsoft Windows NT 10.0.26200.0 x64
What issue are you seeing?
In the Windows desktop app, a newly created chat accepts user messages, but the assistant never responds.
This does not appear to be specific to PDF upload. In a fresh chat created on 2026-07-18, I sent several plain text messages without attaching any files, but no assistant response was generated.
Observed behavior:
- User messages appear on the right side of the conversation.
- The input box remains usable.
- There is no assistant message, loading indicator, or visible error.
- No file was attached in this fresh reproduction.
- The issue happens in the desktop app chat UI.
<img width="1224" height="1027" alt="Image" src="https://github.com/user-attachments/assets/7bd85f43-9924-493f-9fba-cf442e5b11db" />
What steps can reproduce the bug?
- Open the Windows desktop app.
- Create a new chat.
- Send a plain text message, for example: "Are you there?"
- Send several more plain text messages.
- Observe that all user messages appear in the chat, but no assistant response is generated.
What is the expected behavior?
Expected behavior:
- After sending a plain text message in a new chat, the assistant should generate a response.
- If the request cannot be processed, the app should show an explicit error instead of silently doing nothing.
Additional information
_No response_