ReleaseMicrosoftMicrosoftpublished Feb 10, 2026seen Jun 26

microsoft/WindowsAppSDK v1.8.5

microsoft/WindowsAppSDK

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Windows App SDK 1.8.5 (1.8.260209005)

Repository: microsoft/WindowsAppSDK

Tag: v1.8.5

Published: 2026-02-10T23:40:09Z

Prerelease: no

Release notes:

Windows App SDK 1.8.5 (1.8.260209005)

WinAppSDK 1.8.5 is the latest stable version of WinAppSDK 1.8 providing new features and improvements to the platform.

Whats new in WinAppSDK 1.8.5:

  • The version of ONNX Runtime in Windows ML has been updated to ~1.23.3. Benefits from the latest bug fixes, security updates, and performance improvements across all execution providers (CPU, DirectML, OpenVINO, TensorRT)
  • Updated Windows ML License agreement to clarify legal complexities.

Bug fixes:

| Bug Fix | Runtime Compatibility Change | |---------|------------------------------------| | Fixed a package downgrade init failure and added 1.7.8 runtime support—ensuring reliable deployment and correct app recognition across configurations. | DeploymentManager_PackageDowngradeFix | | Fixed an issue where CompositionIsland.StateChanged event handlers where not triggered when the user modified the size of a window by dragging it to the top of the screen or using the edges of the screen and the window has a non-default TitleBar with an IconSource set. | InputNonClientPointerSource_PropagateWindowPosChangedMessage | | Fixed a crash during app shutdown for certain custom input handling scenarios inside of a ScrollViewer. | DwmCoreI_ShutdownManipulationCrash | | Improved diagnosability for Windows AI model initialization and Text Intelligence APIs. | XXModelInitialization_Insights | | Fixed an issue in the Windows AI API GetReadyState which erroneously returns AIFeatureReadyState::NotReady on unsupported Windows OS versions. The API now returns AIFeatureReadyState::NotSupportedOnCurrentSystem | ModelInitialization_KnownExceptions | | Fixed a critical issue where WebView2 crashes in nested or windowless Xaml Islands, blocking React Native for Windows scenarios. | XamlRoot_FixGetHostWindowInNestedIslands |

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Getting Started

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