Android ChatGPT app cannot connect to Codex Desktop on Windows

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• #25164

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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.

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.

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.

Uninstalling and reinstalling Android app did not work for me.

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