Codex in-app browser no longer working in existing projects.

Open 💬 3 comments Opened May 24, 2026 by dmenisdev

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

Codex Desktop macOS latest version.

Browser setting is enabled globally. In-app browser works in a new chat outside a project, but does not work in chats inside my WPLink project. In project chats, the agent does not receive Browser Use tools and reports “The in-app browser backend is not available in this session.”

Computer Use Chrome extension is not installed, but this appears unrelated because the built-in browser works outside the project.

Expected: Browser Use tools should be available in project chats when Browser is enabled globally.
Actual: Browser Use tools are missing only inside the project context.

PS: it worked before but from what I can tell recent Codex updates have broken it.

View original on GitHub ↗

3 Comments

github-actions[bot] contributor · 3 months ago

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

#22852

Powered by Codex Action

GrLime909 · 3 months ago

I solved this issue on my own device. You can refer to my solution here: README.md

donblaauw · 2 months ago

Codex Desktop macOS latest version. Browser setting is enabled globally. In-app browser works in a new chat outside a project, but does not work in chats inside my WPLink project. In project chats, the agent does not receive Browser Use tools and reports “The in-app browser backend is not available in this session.” Computer Use Chrome extension is not installed, but this appears unrelated because the built-in browser works outside the project. Expected: Browser Use tools should be available in project chats when Browser is enabled globally. Actual: Browser Use tools are missing only inside the project context. PS: it worked before but from what I can tell recent Codex updates have broken it.

Did you solve it already?