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## Summary - recognize stale Windows sandbox credentials from both runner logon and child startup failures - refresh credentials once without changing the original command, permissions, file rules, desktop mode, or managed-network identity - add a Windows regression test that forces error 1312 and inspects the real retry arguments ## Why Elevated unified exec starts commands in two steps: ```text Codex -> sandbox command runner -> requested command ``` Either process start can fail when Windows invalidates the sandbox logon session. The child-side failure was previously returned as text, so the parent could not reliably recognize Windows error 1312. The existing retry also refreshed credentials with `proxy_enforced = false`, even when the original request used managed networking. That could change the selected Windows sandbox identity from offline to online during the retry. ## How - carry the failure stage and numeric Windows error code through the command-runner IPC protocol - preserve native `CreateProcessAsUserW` error codes instead of parsing error messages - keep every retry-sensitive field in one request and use it for both attempts - retry exactly once after refreshing credentials, then return the second failure - share the retry rule with the elevated capture path The Windows test injects error 1312 on both attempts and verifies: - two spawn attempts and one credential refresh - stale credentials are replaced by refreshed credentials - both attempts receive the same command, environment, cwd, permissions, roots, deny paths, TTY settings, and private-desktop mode - credential refresh receives the original `proxy_enforced` value ## Tests - `just test -p codex-windows-sandbox` - the new Windows-only regression test is included in the Windows nextest CI archive
4907f0c2c3
·
2026-06-24 20:20:52 +01:00
7,801 Commits
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
Run the following on Mac or Linux to install Codex CLI:
curl -fsSL https://chatgpt.com/codex/install.sh | sh
Run the following on Windows to install Codex CLI:
powershell -ExecutionPolicy ByPass -c "irm https://chatgpt.com/codex/install.ps1 | iex"
Codex CLI can also be installed via the following package managers:
# 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.