#Codex Desktop Chrome plugin on Windows becomes half-installed and cannot expose Chrome backend

1 messages · Page 1 of 1 (latest)

sterile swallowBOT
#

Reported by @eternal ibex

Bug Report: Codex Desktop Chrome plugin on Windows becomes half-installed and cannot expose Chrome backend
`Steps to Reproduce`
  1. On Windows, install/enable the Codex Chrome plugin.
  2. Install the Codex Chrome Extension in Chrome.
  3. Restart Chrome and Codex Desktop.
  4. Try to use Chrome backend / claim a logged-in Chrome tab.
  5. If it fails, reinstall the plugin or extension.
  6. Check native host + bundled plugin state.
`Expected Result`

Codex should detect the installed/enabled Codex Chrome Extension and expose a Chrome browser backend.

agent.browsers.list() should include a Chrome/extension backend, and agent.browsers.get("extension") should allow Codex to list and claim logged-in Chrome tabs.

`Actual Result`

Codex only exposes the in-app browser.

Error:
Browser is not available: extension

Observed:

  • Native host manifest existed, but HKCU NativeMessagingHosts key was missing.
  • After registry fix, Chrome launched extension-host.exe, but Codex still did not expose Chrome.
  • openai-bundled marketplace became incomplete, making Chrome disappear from Add/plugin menu.
`Environment`

Windows, Codex Desktop, Google Chrome 136.0.7103.114 Codex Chrome Extension ID: hehggadaopoacecdllhhajmbjkdcmajg Native host name: com.openai.codexextension Chrome extension version observed: 1.1.4 Chrome profile: Default Observed May 11-12, 2026

#
Additional Information

Please provide relevant details to help resolve the issue, such as:

  • ChatGPT Shared Link (if applicable).
  • Screenshots or videos demonstrating the problem.

-# ➜ Need to contact support? Visit the OpenAI Help Center.