ChatGPT desktop Browser Use cannot attach when admin policy verification becomes unavailable

Summary

In the ChatGPT desktop app, the built-in browser can display an authenticated page and the browser inventory can see the open tab, but Computer Use cannot attach to that same tab.

Steps to reproduce

1. Open an authenticated website in the built-in browser.
2. Ask Codex to interact with the visible tab.
3. Browser state successfully lists the tab, title, and URL.
4. Attempting to attach to the tab fails before any page interaction.

Actual result

The attach operation repeatedly returns:

Browser Use could not complete this action because a browser security check was unavailable. Reason: The admin-enforced policy could not be verified, so access was not granted.

The failure occurred repeatedly after refreshing browser state. The page itself remained visible and usable by the user.

Expected result

Computer Use should attach to the already-open tab when browser use is enabled and the page is visible.

Workaround

The user reports that fully quitting and reopening the ChatGPT desktop app restores the connection. This suggests stale or temporarily unavailable managed-policy state rather than a denied origin.

Environment

• macOS
• ChatGPT desktop app 26.911.61220 (build 9647)
• Built-in browser
• Observed 2026-09-17

No private site URL, credentials, or application logs are included.

No files, tests, or entry points are named in the report. Start by reproducing the attach failure after refreshing browser state, then compare the behavior before and after fully quitting and reopening the desktop app; done means Computer Use attaches to the already-open visible tab when browser use is enabled.