Codex Desktop @chrome bridge fails on Windows: windows sandbox failed: spawn setup refresh

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

26.527.3686.0

What subscription do you have?

ChatGPT Pro

What issue are you seeing?

@chrome fails to connect in Codex Desktop on Windows even though Chrome, the Codex Chrome Extension, and the native messaging manifest all check out as healthy.

The live bridge fails before reaching Chrome with:

windows sandbox failed: spawn setup refresh

Diagnostics:

• Chrome is installed and running.
• Codex Chrome Extension is installed and enabled in the selected Default profile.
• Extension version: 1.1.5_0.
• Native messaging manifest is valid.
• Manifest path: C:\Users\jessy\AppData\Local\OpenAI\extension\com.openai.codexextension.json
• Registry key: HKCU\Software\Google\Chrome\NativeMessagingHosts\com.openai.codexextension
• Expected extension ID: hehggadaopoacecdllhhajmbjkdcmajg
• Native manifest check reports correct: true.

Failing output:

node_repl kernel exited unexpectedly
node_repl diagnostics: {"kernel_pid":6996,"kernel_status":"running","kernel_stderr_tail":"windows sandbox failed: spawn setup refresh","reason":"stdout_eof","stream_error":null}

What steps can reproduce the bug?

1. Open Chrome on Windows.
2. Open Codex Desktop.
3. In a Codex thread, run @chrome test Chrome connection.
4. Observe that the bridge exits during setup.

Also tried:

• Removing and re-adding the Codex Chrome Extension.
• Rebooting Windows.
• Opening Chrome first, then Codex.
• Retesting @chrome test Chrome connection.

What is the expected behavior?

Codex Desktop should connect to the Codex Chrome Extension and be able to list/control Chrome tabs.

Additional information

This appears to be a Codex Desktop local bridge/runtime or Windows sandbox issue, not an IDE extension issue. The Chrome extension and native host manifest both pass diagnostics.

Environment:

• OS: Windows
• Codex Desktop package: OpenAI.Codex_26.527.3686.0_x64__2p2nqsd0c76g0
• Chrome profile: Default
• Codex Chrome Extension version: 1.1.5_0