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Unable to send message #29632

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Unable to send message#29632
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appIssues related to the Codex desktop appbugSomething isn't workingconnectivityIssues involving networking or endpoint connectivity problems (disconnections)windows-osIssues related to Codex on Windows systems

Description

@thefin0614
thefin0614
opened on Jun 23, 2026

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

Version 26.616.71553 • Released Jun 22, 2026

What subscription do you have?

Pro $100/mo

What platform is your computer?

Windows 11

What issue are you seeing?

When trying to send a message as simple as "Hello" I receive a pop up message stating "Unable to send message" "Loading..." and the only option is to click OK.

Image

What steps can reproduce the bug?

  • Click "New Chate"
  • Type "Hello" in message box
  • Pop-up error occurs.
  • Changing models does not fix issue.

What is the expected behavior?

  • Click "New Chat"
  • Type "Hello" in message box
  • Codex ChatGPT should respond to message.

Additional information

I have tried repairing the Codex Windows Desktop app, I have uninstalled and reinstalled the app, I have updated the app, problem continues. This is happening on 2 of my Windows 11 computers.

Activity

  1. thefin0614
    added
    appIssues related to the Codex desktop app
    on Jun 23, 2026
  2. github-actions
    added
    bugSomething isn't working
    windows-osIssues related to Codex on Windows systems
    connectivityIssues involving networking or endpoint connectivity problems (disconnections)
    on Jun 23, 2026

  3. github-actions commented on Jun 23, 2026

    @github-actions
    github-actionsBot
    on Jun 23, 2026 – with GitHub Actions
    Contributor

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

    Powered by Codex Action

  4. panique commented on Jun 26, 2026

    @panique
    panique
    on Jun 26, 2026

    Can confirm on macOS latest Sequioa, on Codex Version 26.623.31921 (Released Jun 26, 2026). This is bananas, our company cannot work... ALL models and all speed settings have the same effect.

    EDIT: I think the bug is related to Codex own app upgrades and ongoing longer chats, meaning that Codex upgrades basically break the possibility to continue a chat. Which is insane for a software that has nearly daily auto-updates, built by a 850 billion dollar company.

  5. Audacity88 commented on Jun 26, 2026

    @Audacity88
    Audacity88
    on Jun 26, 2026

    Also seeing this on macOS. However in my case, this is not a permanent send failure for the thread.

    Codex Desktop: 26.623.31443, build 4441.
    Auth mode: API key login.

    Behavior:

    • Open an existing thread.
    • Send the first message.
    • Modal appears: Unable to send message / Loading....
    • That initial message is not sent.
    • After dismissing the modal, the same thread starts allowing normal sends.

    So it looks like the first send attempt is failing/dropping the message, but it also initializes enough thread/session state that subsequent sends work.

    Local logs near the failure show Codex turn/start / turn/steer routes returning errorCode=null, while renderer fetches to ChatGPT account endpoints like /backend-api/wham/usage and /backend-api/wham/tasks/list return 401 Unauthorized with hadToken=false.

  6. thefin0614 commented on Jun 26, 2026

    @thefin0614
    thefin0614
    on Jun 26, 2026
    Author

    CodexIssue.md
    Attached is a Claude Code session I used to fix this issue. Please review

  7. panique commented on Jun 27, 2026

    @panique
    panique
    on Jun 27, 2026

    Now the updates are blocking any Intel Mac from even using the Codex app. This is insane! 850 billion dollar company. we are paying $100 per dev. Now totally locked out

  8. Haxel0rd commented on Jul 7, 2026

    @Haxel0rd
    Haxel0rd
    on Jul 7, 2026

    Quick fix that worked for me:

    • Rightclick conversation in the left menu
    • Click "Fork into new worktree" and let it start
    • Cancel the forking to new worktree after 2 - 3 seconds
    • Retry sending message in the stale conversation

    Conversation may work again (it did for me, hope for your too).

    Small offtopic note on this (quote of user @panique):

    This is insane! 850 billion dollar company. we are paying $100 per dev. Now totally locked out

    We feel the same. As a cybersecurity company, we think the product and models are strong, and Altman’s intention to make AI publicly accessible seems noble. But customer/product management- and especially support, is really poor, which is a farce for a company of this size.

    For example, one of our employee’s identity verifications failed because their name contained a special character. We contacted support, but were sent in circles and, in the end, they failed to resolve the issue and even got insolent. The account is still unusable, no solution has been offered to this day, and the ticket was simply closed.

    We will be moving our company to Anthropic in Q4 this year. Also, Anthropic’s stance against the use of AI in warfare and weaponry seems, to me personally, like a healthier intent for humanity’s future with AI.

  9. alsherif-khalaf commented on Jul 10, 2026

    @alsherif-khalaf
    alsherif-khalaf
    on Jul 10, 2026

    same issue In Mac

  10. alsherif-khalaf commented on Jul 10, 2026

    @alsherif-khalaf
    alsherif-khalaf
    on Jul 10, 2026

    I found the issue , just delete .codex/config.toml

  11. panique commented on Jul 12, 2026

    @panique
    panique
    on Jul 12, 2026

    FIXED! The issue seems to be fixed in latest Codex Version 26.707.51957, released 12th of July 2026.
    Also the Codex app has been rebranded into the "ChatGPT app", so it's now not a standalone app anymore.
    I recommend @thefin0614 to retest and potentially close the github issue as fixed!

    Thanks everybody ;)

  12. etraut-openai commented on Aug 4, 2026

    @etraut-openai
    etraut-openai
    on Aug 4, 2026
    Contributor

    Send failure fixed in Desktop 26.707.51957.

  13. etraut-openai
    closed this as completedon Aug 4, 2026
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