019ee6a7-cb73-70a2-ae48-a4598cbdaacc ## Environment - OS: Windows 11 - Codex app version: 26.616.41845 - Computer Use plugin: installed and enabled ## Issue Computer Use fails before it can detect or access any application. ## Steps to reproduce 1. Restart Codex. 2. Start a new thread. 3. Invoke `@Computer` and ask it to interact with a visible application, for example Calculator or SolidWorks. ## Actual result The first attempts failed with: `codex/sandbox-state-meta: missing field sandbox

Potential duplicates detected. Please review them and close your issue if it is a duplicate. - #29251 - #29242 - #29212 - #29238 - #29234 *Powered by [Codex Action](https://github.com/openai/codex-action)*

Computer Use unavailable on Windows: sandboxPolicy missing

Resolved 💬 3 comments Opened Jun 20, 2026 by optik8 Closed Aug 6, 2026

💡 Likely answer: A maintainer (github-actions[bot], contributor) responded on this thread — see the highlighted reply below.

019ee6a7-cb73-70a2-ae48-a4598cbdaacc

Environment

OS: Windows 11
Codex app version: 26.616.41845
Computer Use plugin: installed and enabled

Issue

Computer Use fails before it can detect or access any application.

Steps to reproduce

Restart Codex.
Start a new thread.
Invoke @Computer and ask it to interact with a visible application, for example Calculator or SolidWorks.

Actual result

The first attempts failed with:

codex/sandbox-state-meta: missing field sandboxPolicy

Later attempts returned:

Computer control is unavailable for this action.

The same issue occurs with both SolidWorks and Calculator. No application is detected, modified, or saved.

Expected result

Codex should request permission for the visible target application and then interact with it.

View original on GitHub ↗

3 Comments

github-actions[bot] contributor · 2 months ago

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

#29251
#29242
#29212
#29238
#29234

Powered by Codex Action

TUSKWOOD · 2 months ago

Codex Desktop Browser Use is broken.

Exact error:
Mcp error: -32602: js: codex/sandbox-state-meta: missing field sandboxPolicy

Impact:
@Browser / in-app browser control cannot run. A minimal node_repl/js call fails before JavaScript executes, so this is not caused by the target website or local project.

This appears related to a Desktop/app-server/node_repl metadata mismatch after Codex Desktop 26.616.x / 26.619.x.

shadowstar4222 · 2 months ago

Reproduced on Windows with Codex Desktop / Computer Use plugin version 26.616.41845.

Additional observations:

Computer Use was installed, enabled, explicitly attached with @Computer, and retried after fully restarting Codex.
mcp__node_repl__js_reset succeeds and returns js kernel reset.
The first mcp__node_repl__js call fails before any JavaScript executes with:

Mcp error: -32602: js: codex/sandbox-state-meta: missing field sandboxPolicy

The failure occurs before sky.list_apps(), so no Windows application is detected or controlled.
Reproduced with a visible native Godot game window as the intended target.
Changing the thread filesystem permission profile did not affect the failure.

This appears to be at the Codex Desktop-to-node_repl request metadata boundary rather than in the Computer Use plugin bootstrap or target application.