Wasdk/1.8/1.8.5 release notes (#6250)

* Release Notes

Release Notes

* Update windows-app-sdk-1-8.md

* Updated version information

* updated

* Update windows-app-sdk-1-8.md

* Update windows-app-sdk-1-8.md

* Update hub/apps/windows-app-sdk/release-notes/windows-app-sdk-1-8.md

Co-authored-by: Niels Laute <[email protected]>

* Update windows-app-sdk-1-8.md

* Update windows-app-sdk-1-8.md

* Update windows-app-sdk-1-8.md

* Update windows-app-sdk-1-8.md

* updates

* Update windows-app-sdk-1-8.md

* Update windows-app-sdk-1-8.md

---------

Co-authored-by: Niels Laute <[email protected]>
Co-authored-by: KB <[email protected]>

Author: 3 people

hub/apps/windows-app-sdk/downloads.md

@@ -17,6 +17,7 @@ This page provides links to the *latest* downloads of the [Windows App SDK](inde
 
 | Version | Runtime downloads |
 |--|--|
+| **1.8.5 (1.8.260209005)**  <br/> 02/10/2026  <br/> [Release notes](./release-notes/windows-app-sdk-1-8.md?pivots=stable) <br/> [Source](https://github.com/microsoft/microsoft-ui-xaml/releases/tag/winui3%2Frelease%2F1.8.5) | [Installer (x64)](https://aka.ms/windowsappsdk/1.8/1.8.260209005/windowsappruntimeinstall-x64.exe)  <br/> [Installer (x86)](https://aka.ms/windowsappsdk/1.8/1.8.260209005/windowsappruntimeinstall-x86.exe)  <br/> [Installer (arm64)](https://aka.ms/windowsappsdk/1.8/1.8.260209005/windowsappruntimeinstall-arm64.exe)  <br/> [Redistributable (ZIP)](https://aka.ms/windowsappsdk/1.8/1.8.260209005/Microsoft.WindowsAppRuntime.Redist.1.8.zip) |
 | **1.8.4 (1.8.260101001)**  <br/> 01/13/2026  <br/> [Release notes](./release-notes/windows-app-sdk-1-8.md?pivots=stable) <br/> [Source](https://github.com/microsoft/microsoft-ui-xaml/releases/tag/winui3%2Frelease%2F1.8.4) | [Installer (x64)](https://aka.ms/windowsappsdk/1.8/1.8.260101001/windowsappruntimeinstall-x64.exe)  <br/> [Installer (x86)](https://aka.ms/windowsappsdk/1.8/1.8.260101001/windowsappruntimeinstall-x86.exe)  <br/> [Installer (arm64)](https://aka.ms/windowsappsdk/1.8/1.8.260101001/windowsappruntimeinstall-arm64.exe)  <br/> [Redistributable (ZIP)](https://aka.ms/windowsappsdk/1.8/1.8.260101001/Microsoft.WindowsAppRuntime.Redist.1.8.zip) |
 | **1.8.3 (1.8.251106002)**  <br/> 11/11/2025  <br/> [Release notes](./release-notes/windows-app-sdk-1-8.md?pivots=stable) <br/> [Source](https://github.com/microsoft/microsoft-ui-xaml/releases/tag/winui3%2Frelease%2F1.8.3) | [Installer (x64)](https://aka.ms/windowsappsdk/1.8/1.8.251106002/windowsappruntimeinstall-x64.exe)  <br/> [Installer (x86)](https://aka.ms/windowsappsdk/1.8/1.8.251106002/windowsappruntimeinstall-x86.exe)  <br/> [Installer (arm64)](https://aka.ms/windowsappsdk/1.8/1.8.251106002/windowsappruntimeinstall-arm64.exe)  <br/> [Redistributable (ZIP)](https://aka.ms/windowsappsdk/1.8/1.8.251106002/Microsoft.WindowsAppRuntime.Redist.1.8.zip) |
 | **1.8.2 (1.8.251003001)**  <br/> 10/14/2025  <br/> [Release notes](./release-notes/windows-app-sdk-1-8.md?pivots=stable) <br/> [Source](https://github.com/microsoft/microsoft-ui-xaml/releases/tag/winui3%2Frelease%2F1.8.2) | [Installer (x64)](https://aka.ms/windowsappsdk/1.8/1.8.251003001/windowsappruntimeinstall-x64.exe)  <br/> [Installer (x86)](https://aka.ms/windowsappsdk/1.8/1.8.251003001/windowsappruntimeinstall-x86.exe)  <br/> [Installer (arm64)](https://aka.ms/windowsappsdk/1.8/1.8.251003001/windowsappruntimeinstall-arm64.exe)  <br/> [Redistributable (ZIP)](https://aka.ms/windowsappsdk/1.8/1.8.251003001/Microsoft.WindowsAppRuntime.Redist.1.8.zip) |

hub/apps/windows-app-sdk/release-channels.md

@@ -13,7 +13,7 @@ The latest version of the Windows App SDK ships via three release channels: Expe
 
 |   | Channel | Description | Release cadence | Supported? | Latest release |
 |--:|--|--|--|:--:|--|
-| **✅** | **Stable** | Production-ready channel intended for apps in market. Includes only stable, supported APIs suitable for long-term use. | No more than every six months  <br/> *(plus servicing updates as needed)* | Yes | **1.8.4 (1.8.260101001)** <br/> Released: 01/13/2026 <br/> [Release notes](./release-notes/windows-app-sdk-1-8.md?pivots=stable#version-184-18260101001) |
+| **✅** | **Stable** | Production-ready channel intended for apps in market. Includes only stable, supported APIs suitable for long-term use. | No more than every six months  <br/> *(plus servicing updates as needed)* | Yes | **1.8.5 (1.8.260204001)** <br/> Released: 02/10/2026 <br/> [Release notes](./release-notes/windows-app-sdk-1-8.md?pivots=stable#version-185-18260209005) |
 | **❇️** | **Preview** | Early look at the next Stable release. May introduce breaking API changes before final stabilization. | At least one preview for each Stable release | No | **1.8 Preview (1.8-preview)** <br/> Released: 08/19/2025 <br/> [Release notes](./release-notes/windows-app-sdk-1-8.md?pivots=preview#version-18-preview-18-preview) ** |
 | **🔄** | **Experimental** | Early-stage features under active development. APIs may change, be removed, or never ship. Intended for exploration and feedback only. | Published as needed to gather feedback on prototypes and early designs | No | **2.0 Experimental 4 (2.0.0-experimental4)** <br/> Released: 01/13/2026 <br/> [Release notes](./release-notes/windows-app-sdk-2-0.md?pivots=experimental#version-20-experimental-4-200-experimental4) |
 

hub/apps/windows-app-sdk/release-notes/windows-app-sdk-1-8.md

@@ -15,6 +15,29 @@ zone_pivot_groups: wasdk-release-channels
 :::zone pivot="stable"
 
 
+## Version 1.8.5 (1.8.260209005)
+
+Released: **February 10, 2026** <br><br>
+
+<details><summary>Enhanced Windows ML reliability and deployment flexibility</summary>
+
+>
+> * 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.
+>
+</details>
+
+<details><summary>Bug fixes</summary>
+
+>
+> * Fixed a package downgrade init failure and added 1.8.5 runtime support—ensuring reliable deployment and correct app recognition across configurations. ([RuntimeCompatibilityChange](/windows/windows-app-sdk/api/winrt/microsoft.windows.applicationmodel.windowsappruntime.runtimecompatibilityoptions.disabledchanges): DeploymentManager_PackageDowngradeFix).
+> * Fixed an issue where `CompositionIsland.StateChanged` event handlers were 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. Closing #[#10374](https://github.com/microsoft/microsoft-ui-xaml/issues/10374) ([RuntimeCompatibilityChange](/windows/windows-app-sdk/api/winrt/microsoft.windows.applicationmodel.windowsappruntime.runtimecompatibilityoptions.disabledchanges): InputNonClientPointerSource_PropagateWindowPosChangedMessage).
+> * Fixed a crash during app shutdown for certain custom input handling scenarios inside of a ScrollViewer. ([RuntimeCompatibilityChange](/windows/windows-app-sdk/api/winrt/microsoft.windows.applicationmodel.windowsappruntime.runtimecompatibilityoptions.disabledchanges): DwmCoreI_ShutdownManipulationCrash).
+> * Improved diagnosability for Windows AI model initialization and Text Intelligence APIs. ([RuntimeCompatibilityChange](/windows/windows-app-sdk/api/winrt/microsoft.windows.applicationmodel.windowsappruntime.runtimecompatibilityoptions.disabledchanges): ModelInitialization_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`  ([RuntimeCompatibilityChange](/windows/windows-app-sdk/api/winrt/microsoft.windows.applicationmodel.windowsappruntime.runtimecompatibilityoptions.disabledchanges): ModelInitialization_KnownExceptions).
+> * Fixed a critical issue where WebView2 crashes in nested or windowless Xaml Islands, blocking React Native for Windows scenarios. ([RuntimeCompatibilityChange](/windows/windows-app-sdk/api/winrt/microsoft.windows.applicationmodel.windowsappruntime.runtimecompatibilityoptions.disabledchanges): XamlRoot_FixGetHostWindowInNestedIslands).
+>
+</details>
 
 ## Version 1.8.4 (1.8.260101001)