How To Get & Use Codex App on Windows | Step by Step Guide for 2026
Getting the Codex app running on Windows is a lot easier now than many people think, but there’s still one setup detail that can make the experience feel completely different depending on how you use it. In this 2026 step-by-step guide, you’ll learn how to get the Codex app on Windows, how to sign in correctly, and what to watch for before you start your first project. OpenAI officially announced that the Codex app became available on Windows in March 2026, and its Codex app docs describe it as a desktop workspace for running parallel threads with built-in Git and worktree support.
This walkthrough also covers the part most people overlook: Windows can use Codex in more than one way, and choosing the wrong setup can quietly make things harder than they need to be. OpenAI’s Windows docs say Codex can run natively on Windows or through WSL depending on your setup, while the app docs note the Windows app defaults to a native Windows agent and can also work with WSL projects when needed.
You’ll also see how the Codex app compares with the VS Code route on Windows, because those are not exactly the same experience right now. OpenAI’s IDE docs say the VS Code extension is available with experimental Windows support and recommends WSL for the best Windows experience, while the native Codex app is already officially available on Windows.
By the end, you’ll know how to get Codex set up on Windows properly and avoid the common setup choice that trips people up early.
#Codex #OpenAI #Windows #AICoding #DeveloperTools #CodingAssistant