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Android ChatGPT app cannot connect to Codex Desktop on Windows #25595

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Android ChatGPT app cannot connect to Codex Desktop on Windows#25595
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appIssues related to the Codex desktop appbugSomething isn't workingconnectivityIssues involving networking or endpoint connectivity problems (disconnections)remotewindows-osIssues related to Codex on Windows systems

Description

@0Re0-8192
0Re0-8192
opened on Jun 1, 2026

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

Codex Desktop 26.527.31326 Windows package: OpenAI.Codex 26.527.3686.0 app-server: 0.135.0-alpha.1

What subscription do you have?

ChatGPT Pro

What platform is your computer?

Windows 11 Pro, OS version 10.0.26200, x86_64

What issue are you seeing?

I cannot connect from the ChatGPT Android app to Codex Desktop on my Windows PC.

The Android app shows my PC in the Codex mobile device list, but when I select it, it fails with a message like "Could not connect to Codex Desktop".

The PC appears to be online from the backend side. I checked the remote control environments endpoint and it returned online=true, busy=false for this Windows Codex Desktop environment.

I also reset the local Codex remote-control enrollment on the Windows PC. This regenerated the environment/server IDs, but the Android app still cannot connect.

What steps can reproduce the bug?

  1. Open Codex Desktop on Windows.
  2. Open the remote control / Codex mobile pairing screen.
  3. Open the ChatGPT Android app.
  4. Go to Codex mobile / remote control.
  5. Select the Windows PC shown in the device list.
  6. The app tries to connect, then fails with "Could not connect to Codex Desktop".

What is the expected behavior?

The Android ChatGPT app should connect to Codex Desktop and allow remote control.

Additional information

Android device: NX769J
Android version: Android 14
ChatGPT Android app version: 1.2026.146
Computer name shown in Codex mobile: Yuu-roomPC

The Android QR code shown by Codex Desktop decodes only to:
com.openai.chat://codex/open

I also checked Android network traffic with a CONNECT proxy. The ChatGPT app connects to OpenAI hosts including:

  • android.chat.openai.com:443
  • ws.chatgpt.com:443
  • ab.chatgpt.com:443

So the phone appears to reach OpenAI servers, but the remote control connection still fails.

Activity

  1. 0Re0-8192
    added
    appIssues related to the Codex desktop app
    on Jun 1, 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)
    remote
    on Jun 1, 2026

  3. github-actions commented on Jun 1, 2026

    @github-actions
    github-actionsbot
    on Jun 1, 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. VassilisMp commented on Jul 7, 2026

    @VassilisMp
    VassilisMp
    on Jul 7, 2026 – with ChatGPT Codex Connector

    I’m seeing the same failure on a Windows host with Android ChatGPT.

    Environment:

    • Windows 11 host
    • Codex Desktop: 26.623.19656.0
    • Codex CLI/runtime: 0.142.5
    • ChatGPT Android: 1.2026.181
    • Android 16 device: 2412DPC0AG / rodin_global

    Observed behavior:

    • Pairing succeeds and the Windows Codex Desktop Connections page lists the Android device as authorized.
    • The Android app shows the host but fails to connect with the generic connection failure message.
    • Codex Desktop remains at connectionCount=0 during connection attempts.
    • Android logcat shows com.openai.feature.codexremote.impl.data.CodexRemoteSessionForegroundService starting when the user taps connect, so the mobile app is attempting to start the remote session.
    • No obvious ChatGPT Android crash or app-level exception appears in logcat.

    Things checked/tried:

    • codex doctor on the Windows host is clean for auth/connectivity: ChatGPT auth configured, websocket connects with HTTP 101, ChatGPT backend reachable, no proxy env vars.
    • Private DNS/AdGuard on Android was disabled; issue persisted.
    • Android networking for com.openai.chatgpt appears allowed; no background/network restriction was found.
    • Revoking/re-pairing the Android device did not help.
    • Microsoft Store loopback exemption for the Codex package did not help.

    This looks like the mobile app starts the Codex remote foreground service, but the Windows host never receives/creates the live remote session through the relay.

  5. VassilisMp commented on Jul 7, 2026

    @VassilisMp
    VassilisMp
    on Jul 7, 2026 – with ChatGPT Codex Connector

    Additional data point: the same Windows host, same Codex Desktop install, same ChatGPT account/workspace, and same network setup works successfully from a Google Pixel 8 Pro, but fails from a Xiaomi Poco X7 Pro.

    So in this case the Windows host/account/relay path is functional in general. The failure appears specific to the Xiaomi Poco X7 Pro / HyperOS / Android 16 device path.

    Failing device details from earlier diagnostics:

    • Xiaomi Poco X7 Pro / model shown by adb as 2412DPC0AG / rodin_global
    • Android 16
    • ChatGPT Android 1.2026.181
    • When tapping connect, Android starts com.openai.feature.codexremote.impl.data.CodexRemoteSessionForegroundService, but the Windows Desktop never creates a live session and stays at connectionCount=0.

    Working comparison device:

    • Google Pixel 8 Pro
    • Same Windows Codex host and same account/workspace
    • Mobile remote connection succeeds.

  6. VassilisMp commented on Jul 7, 2026

    @VassilisMp
    VassilisMp
    on Jul 7, 2026 – with ChatGPT Codex Connector

    Follow-up/resolution for my Xiaomi case: after uninstalling and reinstalling the ChatGPT Android app on the Xiaomi Poco X7 Pro, remote control started working on that device as well.

    So for this specific case:

    • Same Windows Codex host/account/workspace continued to work from Pixel 8 Pro.
    • Xiaomi Poco X7 Pro initially failed even after re-pairing, disabling Private DNS, and trying a Microsoft Store loopback exemption on Windows.
    • A clean uninstall/reinstall of the ChatGPT Android app on the Xiaomi resolved the issue.

    This suggests the failure may have been caused by stale/corrupted ChatGPT Android app state or stale Codex remote pairing/session state on the Xiaomi device, rather than the Windows host or account/relay path being fundamentally broken.

    Potential workaround for affected Android users: uninstall/reinstall ChatGPT on the failing device, then pair Codex remote control again.

  7. kendonB commented on Jul 17, 2026

    @kendonB
    kendonB
    on Jul 17, 2026

    Uninstalling and reinstalling Android app did not work for me.

  8. LuizHenriqueTeixeiraPaes commented on Aug 14, 2026

    @LuizHenriqueTeixeiraPaes
    LuizHenriqueTeixeiraPaes
    on Aug 14, 2026

    In my case, logging out of the android app, clearing the cache and trying again worked perfectly

    My devices:

    • Samsung S23fe
    • Windows 11 desktop

    Step by Step:

    • Logged out of Android APP
    • cleared Android APP cache
    • revogated all phone connections on the Codex App
    • tried to connect again

    I am not sure if clearing the cache and revoking previous access is necessary as I make this on the first try, but worked for me, hope you find success too

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