Windows app development documentation
Build native Windows apps with WinUI 3, the recommended UI framework for new Windows apps, on your own or with help from an AI agent, and follow the path from your first app to the Microsoft Store.
Get started
Build an app with an AI agent
Concept
Plan your Windows app
How-To Guide
Test your app before you ship
What's new
What's new for Windows developers
Tutorial
Getting started with WinUIOverview
Explore the Windows app platformFrom idea to the Microsoft Store
Plan and build your app, design it, add Windows features, then package, test, and publish it. New to Windows apps? Start with Your path from idea to the Microsoft Store, above.
Tools and samples
Explore controls, inspect working code, and use tools that help you create Windows apps.
More resources
Find support options, community resources, and answers to common Windows app development questions.
Download the current Windows App SDK release or find an earlier release.
Read announcements, release updates, and deep dives from the Windows developer team.
Find reference documentation for Windows App SDK, WinUI, Windows Runtime, and Win32 APIs.