Computer Use unavailable on Windows: sandboxPolicy missing #29267

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1. github-actions

   added

   bugSomething isn't workingSomething isn't working

   appIssues related to the Codex desktop appIssues related to the Codex desktop app

   windows-osIssues related to Codex on Windows systemsIssues related to Codex on Windows systems

   computer-use

   sandboxIssues related to permissions or sandboxingIssues related to permissions or sandboxing

   on Jun 20, 2026
2. github-actions commented on Jun 20, 2026

   

   github-actionsbot

   on Jun 20, 2026 – with GitHub Actions

   Contributor

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

   • Computer Use / node_repl fails on Windows: missing sandboxPolicy #29251
   • Chrome and Computer Use fail with “missing field sandboxPolicy” on Windows 10 #29242
   • Codex Desktop 26.616.41845: node_repl/js fails with missing sandboxPolicy, breaking Chrome and Computer Use tools #29212
   • Codex Desktop Windows: node_repl/js fails before execution with missing sandboxPolicy metadata #29238
   • js_repl incorrectly marked as "removed", breaking Chrome/Browser/Computer-Use plugins #29234

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3. TUSKWOOD commented on Jun 20, 2026

   

   TUSKWOOD

   on Jun 20, 2026

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   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.

   Related open issues:
   #29193
   #29219
   #29241

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

   👍React with 👍1Reacted by 3VILALLIUM
4. shadowstar4222 commented on Jun 21, 2026

   

   shadowstar4222

   on Jun 21, 2026 – with ChatGPT Codex Connector

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   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.
5. etraut-openai

   closed this as a duplicateof Windows Codex Desktop 26.616: node_repl/js fails with codex/sandbox-state-meta missing field sandboxPolicy #29193 on Aug 6, 2026