[Windows] Build warnings with older WinAppSDK version #31669

MartyIX · 2025-09-18T07:11:41Z

Note

Are you waiting for the changes in this PR to be merged?
It would be very helpful if you could test the resulting artifacts from this PR and let us know in a comment if this change resolves your issue. Thank you!

Description of Change

On the main branch, WinAppSDK 1.6 is mentiond in the warnings when dotnet build ./Microsoft.Maui.BuildTasks.slnf is run:

`main`

Restore complete (9,7s)
X:\.nuget\microsoft.windowsappsdk\1.6.241114003\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.6.241114003\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.6.241114003\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Essentials\src\Essentials.csproj]
X:\.nuget\microsoft.windowsappsdk\1.6.241114003\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.6.241114003\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.6.241114003\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Essentials\src\Essentials.csproj]
  Controls.Xaml.Design net472 succeeded (2,9s) → artifacts\bin\Controls.Xaml.Design\Debug\net472\Microsoft.Maui.Controls.Xaml.DesignTools.dll
X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Core\src\Core.csproj]
X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Core\src\Core.csproj]
X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Controls\src\Xaml\Controls.Xaml.csproj]
X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Controls\src\Xaml\Controls.Xaml.csproj]
X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Controls\src\Core\Controls.Core.csproj]
X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Controls\src\Core\Controls.Core.csproj]
X:\.nuget\microsoft.windowsappsdk\1.6.241114003\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.6.241114003\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.6.241114003\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Graphics\src\Graphics.Win2D\Graphics.Win2D.csproj]
X:\.nuget\microsoft.windowsappsdk\1.6.241114003\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.6.241114003\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.6.241114003\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Graphics\src\Graphics.Win2D\Graphics.Win2D.csproj]
X:\.nuget\microsoft.windowsappsdk\1.6.241114003\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.6.241114003\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.6.241114003\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Graphics\src\Graphics\Graphics.csproj]
X:\.nuget\microsoft.windowsappsdk\1.6.241114003\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.6.241114003\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.6.241114003\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Graphics\src\Graphics\Graphics.csproj]

PR

With the PR, dotnet build ./Microsoft.Maui.BuildTasks.slnf does not mention WinAppSdk 1.6:

Restore complete (7,8s)
X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Core\src\Core.csproj]
X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Core\src\Core.csproj]
X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Essentials\src\Essentials.csproj]
X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Essentials\src\Essentials.csproj]
  Controls.Xaml.Design net472 succeeded (2,8s) → artifacts\bin\Controls.Xaml.Design\Debug\net472\Microsoft.Maui.Controls.Xaml.DesignTools.dll
X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Controls\src\Core\Controls.Core.csproj]
  Controls.Core.Design net472 succeeded (3,5s) → artifacts\bin\Controls.Core.Design\Debug\net472\Microsoft.Maui.Controls.DesignTools.dll
X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Controls\src\Core\Controls.Core.csproj]
  Graphics netstandard2.1 succeeded (3,3s) → artifacts\bin\Graphics\Debug\netstandard2.1\Microsoft.Maui.Graphics.dll
X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Graphics\src\Graphics\Graphics.csproj]
X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Graphics\src\Graphics\Graphics.csproj]
X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Graphics\src\Graphics.Win2D\Graphics.Win2D.csproj]
X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Graphics\src\Graphics.Win2D\Graphics.Win2D.csproj]
X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Controls\src\Xaml\Controls.Xaml.csproj]
X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.BeforeCommon.targets(31,3): warning MSB4011: "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.Build.Msix.props" cannot be imported again. It was already imported at "X:\.nuget\microsoft.windowsappsdk\1.7.250606001\buildTransitive\Microsoft.WinUI.props (22,3)". This is most likely a build authoring error. This subsequent import will be ignored. [X:\maui\src\Controls\src\Xaml\Controls.Xaml.csproj]

Issues Fixed

Fixes #31668

dotnet-policy-service · 2025-09-18T07:12:04Z

Hey there @@MartyIX! Thank you so much for your PR! Someone from the team will get assigned to your PR shortly and we'll get it reviewed.

jsuarezruiz · 2025-09-18T10:03:59Z

/azp run

azure-pipelines · 2025-09-18T10:04:20Z

Azure Pipelines successfully started running 3 pipeline(s).

MartyIX · 2025-09-23T15:32:22Z

@mattleibow Does this PR make sense to you?

mattleibow · 2025-09-30T06:45:39Z

/rebase

mattleibow · 2025-09-30T06:46:31Z

/azp run

azure-pipelines · 2025-09-30T06:46:55Z

Azure Pipelines successfully started running 3 pipeline(s).

* [Testing] Fix for flaky UITests CookiesCorrectlyLoadWithMultipleWebViews in CI (#31823) This PR addresses the UI test image failures that occurred in the main branch and includes updates to improve rendering and test stability across platforms. - In the CookiesCorrectlyLoadWithMultipleWebViews test case, I changed the WebView source to match the cookies. ### Test cases: - CookiesCorrectlyLoadWithMultipleWebViews * [iOS] Fix added for Navigation.SetTitleView does not work in ios 26. (#31831) * [iOS] Fix added for Navigation.SetTitleView does not work in ios 26. * changes added. * changed the version condition. * [testing] Update androidApiLevels for device tests (#31827) * Update androidApiLevels for device tests * [ci] Update provisioning of api 36 * Add reference (#31669) * [Windows, Catalyst] Fix IsPresented=true Not Working on Initial Value in FlyoutPage (#31515) * mac fix added * Windows fix added * test case added * Update Issue31372.cs * Update Issue31372.cs * Update WindowHandler.iOS.cs * fix updated * Update WindowHandler.iOS.cs * Update WindowHandler.iOS.cs * Update PublicAPI.Shipped.txt * changes added in UnShipped file * Temporarily disable flaky WebView tests using FlakyTest attribute (#31868) * Initial plan * Temporarily disable flaky WebView tests with FlakyTest attribute Co-authored-by: rmarinho <[email protected]> * Add tracking issue link to FlakyTest attributes Co-authored-by: rmarinho <[email protected]> --------- Co-authored-by: copilot-swe-agent[bot] <[email protected]> Co-authored-by: rmarinho <[email protected]> * Invert NavigationPage UseMauiHandler flag (#31859) * Update dependencies from https://github.com/dotnet/xharness build 20251004.2 (#31872) On relative base path root Microsoft.DotNet.XHarness.CLI , Microsoft.DotNet.XHarness.TestRunners.Common , Microsoft.DotNet.XHarness.TestRunners.Xunit From Version 9.0.0-prerelease.25426.1 -> To Version 9.0.0-prerelease.25504.2 Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com> * [release/9.0.1xx-sr12] Fix ProjectList not displaying due to missing BindingContext update in template sample (#31954) * update ProjectListPage * Update MauiApp.1.csproj --------- Co-authored-by: Vignesh-SF3580 <[email protected]> * [release/9.0.1xx-sr12] [Android] -Picker dialog causes crash when page is popped while dialo… (#31919) * [Android] -Picker dialog causes crash when page is popped while dialog is open * removed the dispose call. * Revert "removed the dispose call." This reverts commit e1e7a9f. * removed the dispose call. * Modified with Dismiss() method. --------- Co-authored-by: sheiksyedm <[email protected]> * [release/9.0.1xx-sr12] [iOS] Fix memory leak in CollectionViewHandler2 ItemsLayout PropertyChanged subscription (#31922) * [release/9.0.1xx-sr12] [Android][Regression] Fixed Entry and Editor AppThemeBinding colors for text and placeholder reset to default on theme change (#31921) * added snapshots and fix * removed test cases * added the test cases and snapshots * added braces * added mac and windows snapshots * added mac and windows snapshots * added snapshot --------- Co-authored-by: TamilarasanSF4853 <[email protected]> * 9.0.120 Release Branding (#31979) * [release/9.0.1xx-sr12] [ci] Update arcade main (#31987) * Update arcade * Don t use internal feeds --------- Co-authored-by: Rui Marinho <[email protected]> * Update FlyoutViewHandler.Windows.cs (#32007) Co-authored-by: devanathan-vaithiyanathan <[email protected]> --------- Co-authored-by: TamilarasanSF4853 <[email protected]> Co-authored-by: sheiksyedm <[email protected]> Co-authored-by: Rui Marinho <[email protected]> Co-authored-by: MartyIX <[email protected]> Co-authored-by: devanathan-vaithiyanathan <[email protected]> Co-authored-by: Copilot <[email protected]> Co-authored-by: rmarinho <[email protected]> Co-authored-by: Tim Miller <[email protected]> Co-authored-by: dotnet-maestro[bot] <42748379+dotnet-maestro[bot]@users.noreply.github.com> Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com> Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> Co-authored-by: Vignesh-SF3580 <[email protected]>

dotnet-policy-service bot added the community ✨ Community Contribution label Sep 18, 2025

MartyIX added the platform/windows label Sep 18, 2025

bronteq mentioned this pull request Sep 18, 2025

[Bug][Windows] MAUI has a chance to fail with 0xC0000409 crash in InputStateManager.dll when processing tap input #31476

Open

MartyIX requested a review from mattleibow September 23, 2025 15:32

Add reference

adfd6ca

github-actions bot force-pushed the feature/2025-09-18-old-winappsdk-warnings branch from 6d308b6 to adfd6ca Compare September 30, 2025 06:46

mattleibow approved these changes Sep 30, 2025

View reviewed changes

rmarinho approved these changes Oct 5, 2025

View reviewed changes

rmarinho merged commit 11ce8c9 into dotnet:main Oct 5, 2025
129 checks passed

github-actions bot locked and limited conversation to collaborators Nov 5, 2025

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

[Windows] Build warnings with older WinAppSDK version #31669

[Windows] Build warnings with older WinAppSDK version #31669

Uh oh!

MartyIX commented Sep 18, 2025

Uh oh!

dotnet-policy-service bot commented Sep 18, 2025

Uh oh!

jsuarezruiz commented Sep 18, 2025

Uh oh!

azure-pipelines bot commented Sep 18, 2025

Uh oh!

MartyIX commented Sep 23, 2025

Uh oh!

mattleibow commented Sep 30, 2025

Uh oh!

mattleibow commented Sep 30, 2025

Uh oh!

azure-pipelines bot commented Sep 30, 2025

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

4 participants

[Windows] Build warnings with older WinAppSDK version #31669

[Windows] Build warnings with older WinAppSDK version #31669

Uh oh!

Conversation

MartyIX commented Sep 18, 2025

Description of Change

main

PR

Issues Fixed

Uh oh!

dotnet-policy-service bot commented Sep 18, 2025

Uh oh!

jsuarezruiz commented Sep 18, 2025

Uh oh!

azure-pipelines bot commented Sep 18, 2025

Uh oh!

MartyIX commented Sep 23, 2025

Uh oh!

mattleibow commented Sep 30, 2025

Uh oh!

mattleibow commented Sep 30, 2025

Uh oh!

azure-pipelines bot commented Sep 30, 2025

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

4 participants

`main`