Windows SDK 23H2 – What's New

Overview

The Windows 23H2 SDK adds new APIs, performance enhancements, and tooling updates that enable developers to build modern Windows experiences faster. This release aligns with the latest Windows 11 features, improving support for AI, gaming, and cross‑device scenarios.

New APIs

Windows AI Integration (winrt.ai) +

Provides access to on‑device AI inference, including text, vision, and speech models. See winrt.ai reference for details.

Game Mode Enhancements (winrt.game) +

New APIs to query and control Game Mode, enabling better resource allocation for high‑performance games.

Enhanced Clipboard (winrt.clipboard) +

Supports rich data formats and per‑app clipboard history.

Improvements & Fixes

Reduced installation footprint by 12%.
Updated Windows Header Files for new system calls.
Improved debugging symbols for better stack traces.
Enhanced support for ARM64 in C++/WinRT.

Compatibility

The 23H2 SDK is backward compatible with apps targeting Windows 10 version 1809 and later. Projects built with previous SDK versions can be upgraded by updating the TargetPlatformVersion property.

Download & Installation

Download the latest Windows SDK installer from the Microsoft Download Center.

Download Windows SDK 23H2

The installer includes the MSVC toolset, Windows headers, libraries, and the latest WinUI 3 components.

Release Notes

For a full list of changes, see the Windows SDK 23H2 release notes.