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## Why Windows release artifacts currently import `VCRUNTIME140.dll` and `VCRUNTIME140_1.dll`. That becomes observable on clean Windows machines that do not already have the VC++ runtime available globally: - Desktop Store launches can fail after the app relocates `codex.exe` out of `WindowsApps`, which means an MSIX-level VCLibs dependency does not protect the relocated CLI/app-server process. - The npm CLI path reproduces the same missing-DLL startup failure when `System32\vcruntime140_1.dll` is hidden and `PATH` is stripped of incidental fallback copies. In that setup, the existing Windows binary exits with `0xC0000135` / `-1073741515` before Codex code runs. ## What changed - Add `-C target-feature=+crt-static` to the existing MSVC-only Cargo rustflags in `codex-rs/.cargo/config.toml`. - Preserve the existing `/STACK:8388608` linker setting in the same target block. This keeps the change scoped to Windows MSVC builds and avoids altering non-Windows or GNU target behavior. ## Verification I built an x64 Windows release probe with static CRT linkage and the normal 8 MiB stack reserve, then verified: - `dumpbin /dependents codex.exe` no longer reports `VCRUNTIME140.dll` or `VCRUNTIME140_1.dll`. - `dumpbin /headers codex.exe` reports `800000 size of stack reserve`. - With `System32\vcruntime140_1.dll` hidden and `PATH` stripped to Windows system directories only: - the old npm CLI path exits `-1073741515` - the rebuilt static-CRT `codex.exe --version` succeeds with exit code `0` - the rebuilt TUI starts successfully I also confirmed `codex.exe app-server --listen ws://127.0.0.1:0` starts and binds normally with the static-CRT artifact.
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.