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ResourceLoader.GetString throws COMException (NamedResource Not Found) for keys containing '.' in WinUI 3 desktop app

needs-triage

Status: Open.

#6247 In microsoft/WindowsAppSDK;

· hoshiizumiya opened on Feb 23, 2026

Significant performance overhead in WinRT API calls (ApplicationData, Package.Current)

area-ApplicationDataTopics related to ApplicationData APIs in the Microsoft.Windows.Storage namespaceTopics related to ApplicationData APIs in the Microsoft.Windows.Storage namespace

area-PackageManagementMSIX deployment technology (eg PackageDeploymentManager)MSIX deployment technology (eg PackageDeploymentManager)

Status: Open.

#6223 In microsoft/WindowsAppSDK;

· ekalchev opened on Feb 18, 2026

·  

Future (backlog)

WASDK PackageVolume is missing APIs related to FindPackageXXX

area-PackageManagementMSIX deployment technology (eg PackageDeploymentManager)MSIX deployment technology (eg PackageDeploymentManager)

feature proposal

Status: Open.

Feature

#6222 In microsoft/WindowsAppSDK;

· Gaoyifei1011 opened on Feb 17, 2026

·  

Future (backlog)

Where is PackageManager.MovePackageToVolumeAsync?

area-PackageManagementMSIX deployment technology (eg PackageDeploymentManager)MSIX deployment technology (eg PackageDeploymentManager)

feature proposal

Status: Open.

Feature

#6221 In microsoft/WindowsAppSDK;

· Gaoyifei1011 opened on Feb 17, 2026

·  

Future (backlog)

WASDK LaunchActivatedEventArgs cannot be directly converted into WinRT LaunchActivatedEventArgs

area-ProjectionsRequest for support of a runtime or languageRequest for support of a runtime or language

needs-triage

Status: Open.

#6219 In microsoft/WindowsAppSDK;

· Gaoyifei1011 opened on Feb 14, 2026

DataTransferManager cannot share in elevated mode

area-ExternalTopics external to Windows App SDKTopics external to Windows App SDK

needs-triage

Status: Open.

#6216 In microsoft/WindowsAppSDK;

· Gaoyifei1011 opened on Feb 14, 2026

appxsym generated by wap project does not contain exe pdb when publish with native aot

area-AOTNative Ahead-Of-Time (AOT) compilation in Windows App SDKNative Ahead-Of-Time (AOT) compilation in Windows App SDK

Status: InvestigatingThe issue is actively being investigated by a member in the associated issue area.The issue is actively being investigated by a member in the associated issue area.

Status: Open.

#6208 In microsoft/WindowsAppSDK;

· UEPSs opened on Feb 12, 2026

Missing static Bootstrapper library in Windows App SDK 1.8 (Unpackaged C++)

area-WinAppSDKDeploymentIssues related to packaging, installation, runtime (e.g., SelfContained, Unpackaged)Issues related to packaging, installation, runtime (e.g., SelfContained, Unpackaged)

needs-triage

Status: Open.

#6201 In microsoft/WindowsAppSDK;

· BartcreeBart opened on Feb 9, 2026

You should be able to use the MSIX NuGet package without Visual Studio installed

area-PackagingTopics related to packaging behavior of Windows App SDKTopics related to packaging behavior of Windows App SDK

bugSomething isn't workingSomething isn't working

Status: Fixed internallyThe issue has been fixed but has not yet shipped in a release.The issue has been fixed but has not yet shipped in a release.

Status: Open.

#6197 In microsoft/WindowsAppSDK;

· wjk opened on Feb 6, 2026

Microsoft.Windows.SDK.Buildtools.MSIX will still try to generate the .appsym even AppxSymbolPackageEnabled="false"

area-PackagingTopics related to packaging behavior of Windows App SDKTopics related to packaging behavior of Windows App SDK

needs-triage

Status: Open.

#6183 In microsoft/WindowsAppSDK;

· zhuxb711 opened on Feb 3, 2026

"Could not copy the file ..." errors after adding Microsoft.WindowsAppSDK.ML NuGet package

area-DeveloperToolsIssues related to authoring (source and IDL), debugging, HotReload, LiveVisualTree, VS integrationIssues related to authoring (source and IDL), debugging, HotReload, LiveVisualTree, VS integration

needs-triage

Status: Open.

#6174 In microsoft/WindowsAppSDK;

· debruyckere opened on Jan 29, 2026

WinML ORT compile and inferenceSession error when the model path contains any non‑ASCII Unicode characters

area-WinMLTopics related to Windows Machine Learning (WinML) in Windows App SDKTopics related to Windows Machine Learning (WinML) in Windows App SDK

Status: Open.

#6173 In microsoft/WindowsAppSDK;

· rnagata0 opened on Jan 29, 2026