microsoft/WindowsAppSDK v2.0-exp2

2.0.0 Experimental 2 (2.0.0-experimental2) 🧪

Repository: microsoft/WindowsAppSDK

Tag: v2.0-exp2

Published: 2025-11-06T00:35:38Z

Prerelease: yes

Release notes:

Windows App SDK 2.0-Experimental2 (2.0.0-experimental2)

WinAppSDK 2.0.0 Experimental 2 is the latest experimental version of WinAppSDK providing new features and improvements to the platform.

What's new in WinAppSDK 2.0.0 Experimental 2:

• New AppContentIndexer API enables application to efficiently index their content enabling the following experiences:
• Semantic Search enables apps to return results based on intent and meaning rather than keyword match
• Retrieval-Augmented Generation (RAG) allowing indexed content to be served as a knowledge base for generative AI models.
• Windows ML Model Catalog allows apps or libraries to dynamically discover and download large AI model files from your own online model catalogs.
• InputUnderlyingWindowController allows callers to specify the HWND that will receive the input messages originally directed to a ContentIsland created from a SystemVisual
• SystemBackdropHost provides XAML-compatible approach to placing a system backdrop anywhere within an application's visual tree.
• PopupAnchor now allows DesktopPopupSiteBridge to support relative positioning by anchoring to its owning window or island.
• The latest Storage.Pickers update streamlines file and folder selection by letting developers set initial and persistent folder locations, and by grouping filetype filters with clear labels for easier navigation.
• WrapPanel allows arranging child elements in a sequential position from left to right, items overflowing the line will break to the next line automatically.

To see everything that's new and changed, see the full [Windows App SDK 2.0 Experimental release notes](https://aka.ms/windowsappsdk/2.0/2.0.0-experimental2/release-notes).

Try it out

• Download the 2.0.0-experimental2 NuGet package to use WinAppSDK 2.0 in your app.
• Download and update the WinUI Gallery to see the WinUI 3 updates firsthand.

Getting Started

To get started using Windows App SDK to develop Windows apps, check out the following documentation:

• Install developer tools .
• Create a WinUI 3 app.
• Continue your development journey.