codex - 💡(How to fix) Fix Codex Desktop macOS: Computer Use always fails with "runtime app is missing" despite valid 1.0.791 runtime install

What version of the Codex App are you using (From “About Codex” dialog)?

computer-use@openai-bundled 1.0.791

What subscription do you have?

Pro

What platform is your computer?

macOS (Apple Silicon)

What issue are you seeing?

Computer Use fails at runtime in every thread and on every app target, even after reinstalling the plugin and restarting Codex multiple times.

Both MCP calls fail with the same message:

list_apps -> Computer Use could not start because its runtime app is missing. get_app_state("Calculator") -> same error Important: this is not the direct @<app> routing regression. Even explicit @Computer calls fail.

What steps can reproduce the bug?

Open Codex Desktop on macOS. Ensure computer-use@openai-bundled is installed/enabled. In chat, run any Computer Use action (for example: “@Computer open Calculator”). Observe runtime app is missing on every call.

What is the expected behavior?

Computer Use should initialize and return app state (screenshot/accessibility tree), and then allow app automation.

Additional information

I performed all of the following and the issue persists:

Reinstalled computer-use@openai-bundled. Fully quit/relaunched Codex multiple times. Updated runtime client path in CODEX_HOME/config.toml to existing 1.0.791 binary. Replaced local runtime bundle at: /Volumes/WD_BLACK/CodexHome/computer-use/Codex Computer Use.app with fresh copy from: /Volumes/WD_BLACK/CodexHome/plugins/cache/openai-bundled/computer-use/1.0.791/Codex Computer Use.app Verified binaries exist and are executable. Verified code signing and Gatekeeper assessment pass. Verified no quarantine attribute. Ran local verifier script -> RESULT: PASS.

computer-use-support-20260515-191513.tar.gz