OpenAI Ships New MXC-Based Sandbox Mode for Codex on Windows

OpenAI announced a new sandbox mode for Codex on Windows, built on Microsoft's newly GA Execution Containers (MXC), offering faster setup and stronger isolation for running untrusted code.

2026-10-09 ~ 2026-10-09 · 2 related posts

• OpenAI builds new Codex sandbox on Windows using Microsoft Execution Containers (MXC) — OpenAIDevs · 2026-10-09
• OpenAI ships new MXC-based sandbox mode for Codex on Windows with stricter controls — OpenAIDevs · 2026-10-09