## Summary Some improvements to Windows process-management issues from https://github.com/openai/codex/pull/15578 - bound the elevated runner pipe-connect handshake instead of waiting forever on blocking pipe connects - terminate the spawned runner if that handshake fails, so timeout/error paths do not leave a stray `codex-command-runner.exe` - loop on partial `WriteFile` results when forwarding stdin in the elevated runner, so input is not silently truncated - fix the concrete HANDLE/SID cleanup paths in the runner setup code - keep draining driver-backed stdout/stderr after exit until the backend closes, instead of dropping the tail after a fixed 200ms grace period - reuse `LocalSid` for SID ownership and add more explanatory comments around the ownership/concurrency-sensitive code paths ## Why The original PR fixed a lot of Windows session plumbing, but there were still a few sharp process-lifecycle edges: - some elevated runner handshakes could block forever - the new timeout path could still orphan the spawned runner process - stdin forwarding still assumed a single `WriteFile` consumed the whole buffer - a few raw HANDLE/SID error paths still leaked - driver-backed output could still lose the last chunk of stdout/stderr on slower backends ## Validation - `cargo fmt -p codex-windows-sandbox -p codex-utils-pty` - `cargo test -p codex-utils-pty` - `cargo test -p codex-windows-sandbox finish_driver_spawn` - `cargo test -p codex-windows-sandbox runner_` Ran a local test matrix of unified-exec and shell_tool tests, all passing
npm i -g @openai/codex
or brew install --cask codex
Codex CLI is a coding agent from OpenAI that runs locally on your computer.
If you want Codex in your code editor (VS Code, Cursor, Windsurf), install in your IDE.
If you want the desktop app experience, run
codex app or visit the Codex App page.
If you are looking for the cloud-based agent from OpenAI, Codex Web, go to chatgpt.com/codex.
Quickstart
Installing and running Codex CLI
Install globally with your preferred package manager:
# Install using npm
npm install -g @openai/codex
# Install using Homebrew
brew install --cask codex
Then simply run codex to get started.
You can also go to the latest GitHub Release and download the appropriate binary for your platform.
Each GitHub Release contains many executables, but in practice, you likely want one of these:
- macOS
- Apple Silicon/arm64:
codex-aarch64-apple-darwin.tar.gz - x86_64 (older Mac hardware):
codex-x86_64-apple-darwin.tar.gz
- Apple Silicon/arm64:
- Linux
- x86_64:
codex-x86_64-unknown-linux-musl.tar.gz - arm64:
codex-aarch64-unknown-linux-musl.tar.gz
- x86_64:
Each archive contains a single entry with the platform baked into the name (e.g., codex-x86_64-unknown-linux-musl), so you likely want to rename it to codex after extracting it.
Using Codex with your ChatGPT plan
Run codex and select Sign in with ChatGPT. We recommend signing into your ChatGPT account to use Codex as part of your Plus, Pro, Business, Edu, or Enterprise plan. Learn more about what's included in your ChatGPT plan.
You can also use Codex with an API key, but this requires additional setup.
Docs
This repository is licensed under the Apache-2.0 License.
