# Codex announces an MXC sandbox for compatible Windows 11 devices



OpenAI



Codex’s new sandbox uses Microsoft Execution Containers \(MXC\) for faster setup, stronger network enforcement and granular file access controls. It requires a compatible Windows 11 device.

- Review updated: Oct 10, 2026 09:25 Sat · Beijing Time (UTC+8)

## Sources

- Source excerpt: https://x.com/OpenAIDevs/status/2108573188703781190

Canonical entry: https://www.ailyre.com/source/?id=openai-codex-windows-mxc-sandbox-2026-10-09&lang=en