Skip to content

Commit 3f72799

Browse files
agniuksagniuks
authored
WASDK 1.8.7 release notes (#6670)
1 parent 0b6db8e commit 3f72799

3 files changed

Lines changed: 70 additions & 2 deletions

File tree

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

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -17,6 +17,7 @@ This page provides links to the *latest* downloads of the [Windows App SDK](inde
1717

1818
| Version | Runtime downloads |
1919
|--|--|
20+
| **1.8.7 (1.8.260416003)** <br/> 04/21/2026 <br/> [Release notes](./release-notes/windows-app-sdk-1-8.md?pivots=stable#version-187-18260416003) <br/> [Source](https://github.com/microsoft/microsoft-ui-xaml/releases/tag/winui3%2Frelease%2F1.8.7) | [Installer (x64)](https://aka.ms/windowsappsdk/1.8/1.8.260416003/windowsappruntimeinstall-x64.exe) <br/> [Installer (x86)](https://aka.ms/windowsappsdk/1.8/1.8.260416003/windowsappruntimeinstall-x86.exe) <br/> [Installer (arm64)](https://aka.ms/windowsappsdk/1.8/1.8.260416003/windowsappruntimeinstall-arm64.exe) <br/> [Redistributable (ZIP)](https://aka.ms/windowsappsdk/1.8/1.8.260416003/Microsoft.WindowsAppRuntime.Redist.1.8.zip) |
2021
| **1.8.6 (1.8.260317003)** <br/> 03/18/2026 <br/> [Release notes](./release-notes/windows-app-sdk-1-8.md?pivots=stable#version-186-18260317003) <br/> [Source](https://github.com/microsoft/microsoft-ui-xaml/releases/tag/winui3%2Frelease%2F1.8.6) | [Installer (x64)](https://aka.ms/windowsappsdk/1.8/1.8.260317003/windowsappruntimeinstall-x64.exe) <br/> [Installer (x86)](https://aka.ms/windowsappsdk/1.8/1.8.260317003/windowsappruntimeinstall-x86.exe) <br/> [Installer (arm64)](https://aka.ms/windowsappsdk/1.8/1.8.260317003/windowsappruntimeinstall-arm64.exe) <br/> [Redistributable (ZIP)](https://aka.ms/windowsappsdk/1.8/1.8.260317003/Microsoft.WindowsAppRuntime.Redist.1.8.zip) |
2122
| **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) |
2223
| **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) |

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

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -13,7 +13,7 @@ The latest version of the Windows App SDK ships via three release channels: Expe
1313

1414
| | Channel | Description | Release cadence | Supported? | Latest release |
1515
|--:|--|--|--|:--:|--|
16-
| **✅** | **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 | **1.8.6 (1.8.260317003)** <br/> Released: 03/18/2026 <br/> [Release notes](./release-notes/windows-app-sdk-1-8.md?pivots=stable#version-186-18260317003) |
16+
| **✅** | **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 | **1.8.7 (1.8.260416003)** <br/> Released: 04/21/2026 <br/> [Release notes](./release-notes/windows-app-sdk-1-8.md?pivots=stable#version-187-18260416003) |
1717
| **❇️** | **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 | **2.0 Preview2 (2.0.0-preview2)** <br/> Released: 03/31/2026 <br/> [Release notes](./release-notes/windows-app-sdk-2-0.md?pivots=preview#version-20-preview-2-200-preview2) |
1818
| **🔄** | **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 7 (2.0.0-experimental7)** <br/> Released: 04/21/2026 <br/> [Release notes](./release-notes/windows-app-sdk-2-0.md?pivots=experimental#version-20-experimental-7-200-experimental7) |
1919

@@ -49,7 +49,7 @@ The Windows App SDK has a lifecycle. A lifecycle begins when a version or servic
4949

5050
| Windows App SDK version | Original release date | Latest patch version | Patch release date | Support level | End of servicing |
5151
| ----------------------- | --------------------- | -------------------- | ------------------ | -------------- | ---------------- |
52-
| 1.8 | 09/09/2025 | 1.8.260317003 | 03/18/2026 | Current | 09/09/2026 |
52+
| 1.8 | 09/09/2025 | 1.8.260416003 | 04/21/2026 | Current | 09/09/2026 |
5353
| 1.7 | 03/18/2025 | 1.7.260224002 | 03/10/2026 | Maintenance | 03/18/2026 |
5454
| 1.6 | 09/04/2024 | 1.6.250602001 | 06/10/2025 | Out of Support | 09/04/2025 |
5555
| 1.5 | 02/29/2024 | 1.5.250108004 | 01/15/2025 | Out of Support | 02/28/2025 |

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

Lines changed: 67 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -15,6 +15,73 @@ zone_pivot_groups: wasdk-release-channels
1515
:::zone pivot="stable"
1616

1717

18+
## Version 1.8.7 (1.8.260416003)
19+
20+
Released: **April 21, 2026** <br><br>
21+
22+
23+
<details><summary>New CoPilot+ PC capability check</summary>
24+
25+
>
26+
> A new **AICapabilities.HasAICapability** API enables third-party applications to determine whether the device is a Copilot+ PC.
27+
>
28+
29+
</details>
30+
31+
<details><summary>New AIFeatureReadyResult.PackageInstallationFailed API</summary>
32+
33+
>
34+
> The `AIFeatureReadyResult.PackageInstallationFailed` API enables apps to detect when an `EnsureReadyAsync` failure was caused by a known or expected install condition (such as a network failure, Windows Update error, or low disk space). Apps can use this signal to handle expected install failures differently from genuine errors, rather than treating them all as fatal.
35+
>
36+
37+
</details>
38+
39+
<details><summary>Expanded NPU hardware support</summary>
40+
41+
>
42+
> Windows ML NPU detection has been centralized to support new and upcoming NPU hardware types without requiring client application updates.
43+
>
44+
45+
</details>
46+
47+
<details><summary>Updated ONNX Runtime</summary>
48+
49+
>
50+
> The version of ONNX Runtime has been updated to 1.23.5. See [ONNX Runtime versions](/windows/ai/new-windows-ml/onnx-versions) for more info.
51+
>
52+
53+
</details>
54+
55+
<details><summary>Bug fixes</summary>
56+
57+
>
58+
> * Fixed a crash in Windows AI **LanguageModel** APIs that could occur when an exception was encountered during input processing. ([RuntimeCompatibilityChange](/windows/windows-app-sdk/api/winrt/microsoft.windows.applicationmodel.windowsappruntime.runtimecompatibilityoptions.disabledchanges): LanguageModel_ProcessingFix)
59+
> * Fixed `ImageDescription.DescribeAsync` failing with `InternalError` when called concurrently from multiple threads. ([RuntimeCompatibilityChange](/windows/windows-app-sdk/api/winrt/microsoft.windows.applicationmodel.windowsappruntime.runtimecompatibilityoptions.disabledchanges): ImageDescription_ConcurrencyFix)
60+
> * Fixed an issue where content moderation error codes from **LanguageModel** APIs could be silently overwritten by subsequent errors, preventing callers from receiving the correct content safety signals. ([RuntimeCompatibilityChange](/windows/windows-app-sdk/api/winrt/microsoft.windows.applicationmodel.windowsappruntime.runtimecompatibilityoptions.disabledchanges): LanguageModel_ContentErrorHandlingFix)
61+
> * Fixed an issue where the touch keyboard would not appear in XAML island scenarios (such as File Explorer) after using touch elsewhere in the app. ([RuntimeCompatibilityChange](/windows/windows-app-sdk/api/winrt/microsoft.windows.applicationmodel.windowsappruntime.runtimecompatibilityoptions.disabledchanges): InputPointerSource_TouchKeyboardInvocationFix)
62+
> * Fixed a ListView crash (`E_BOUNDS` in `Selector::OnGettingFocus`) that could occur during keyboard navigation (Tab/Shift+Tab) after the items list was updated. ([RuntimeCompatibilityChange](/windows/windows-app-sdk/api/winrt/microsoft.windows.applicationmodel.windowsappruntime.runtimecompatibilityoptions.disabledchanges): ListViewSelector_FixFocusedIndex)
63+
> * Fixed a crash that may occur on certain devices when active touch contacts are canceled by input hardware, such as when pen input overrides them. ([RuntimeCompatibilityChange](/windows/windows-app-sdk/api/winrt/microsoft.windows.applicationmodel.windowsappruntime.runtimecompatibilityoptions.disabledchanges): InputPointerSource_PointerCancelCrashFix)
64+
> * Improved diagnosability for Windows AI model initialization telemetry. ([RuntimeCompatibilityChange](/windows/windows-app-sdk/api/winrt/microsoft.windows.applicationmodel.windowsappruntime.runtimecompatibilityoptions.disabledchanges): ModelInitialization_Activities)
65+
> * Improved diagnosability for Windows ML APIs. ([RuntimeCompatibilityChange](/windows/windows-app-sdk/api/winrt/microsoft.windows.applicationmodel.windowsappruntime.runtimecompatibilityoptions.disabledchanges): WindowsML_DiagnosabilityFix)
66+
>
67+
68+
</details>
69+
70+
<details><summary>New or updated APIs</summary>
71+
72+
>
73+
> This release includes the following new APIs compared to the 1.8.6 release:
74+
> ```
75+
> Microsoft.Windows.AI
76+
>
77+
> AICapabilities
78+
> AICapabilityCategory
79+
> AIFeatureReadyResult
80+
> PackageInstallationFailed
81+
> ```
82+
</details>
83+
84+
1885
## Version 1.8.6 (1.8.260317003)
1986
2087
Released: **March 18, 2026** <br><br>

0 commit comments

Comments
 (0)