Browser plugin fails after desktop update: trusted RPC dependency error

Summary

After a Windows Codex desktop update, the built-in Browser plugin cannot initialize. This prevents all in-app browser use before any webpage or authentication step is reached.

Error

Trusted RPC dependency must resolve within a configured trusted code path: .../browser-service.mjs

Environment

• Windows Codex desktop package: OpenAI.Codex_26.814.5167.0_x64
• Browser plugin version: 26.814.41407

Reproduction

1. Start a Codex desktop chat.
2. Ask Codex to use the built-in Browser / @Browser.
3. Browser runtime initialization fails immediately with the error above.

Expected behavior

The Browser plugin should initialize and open the built-in browser.

Troubleshooting already attempted

• Fully restarted the desktop app.
• Restarted the PC.
• Rebuilt the Browser plugin cache; Codex recreated it, but the failure remained.
• Used Windows Apps > OpenAI Codex > Advanced options > Repair.

No browser session, website login, application data, or logs are attached to this report.

Start with the Browser plugin initialization path and the referenced browser-service.mjs, reproducing the failure on Windows with the listed package and plugin versions. Trace why the trusted RPC dependency is rejected, then verify that Browser initializes successfully without the reported error.