"Getting started" MAUI App does not run on Windows

[vsfeedback]

This issue has been moved from a ticket on Developer Community.

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[severity:It's more difficult to complete my work]
"my" first MAUI App throws a 'System.Runtime.InteropServices.COMException' in Microsoft.WindowsAppRuntime.Bootstrap.Net.dll

Running Microsoft Visual Studio Community 2022 (64-bit) - Preview, Version 17.1.0 Preview 1.1 with these workloads

• Mobile development with .NET
• .NET desktop development
• Universal Windows Platform development

The steps below reproduced the issue both before and after I ran a repair of the VS Community install.

Repro:

1. steps 1 - 3 at https://docs.microsoft.com/en-us/dotnet/maui/get-started/first-app
2. uncomment the windows target frameworks tag in MauiApp1.csproj
   <TargetFrameworks Condition="$([MSBuild]::IsOSPlatform('windows')) and '$(MSBuildRuntimeType)' == 'Full'">$(TargetFrameworks);net6.0-windows10.0.19041</TargetFrameworks>
3. update NUGet packages Microsoft.Graphics.Win2D to 1.0.0.30 and Microsoft.WindowsAppSDK 1.0.0
   (until doing this update the net6.0-windows10.0.19041 dependency is shown as broken)
4. choose the net6.0-windows10.0.19041 target in the Framework dropdown
   (automatically selects "Windows Machine" as debug target)
5. build MauiApp1.csproj -> a bunch of warnings:

Build started...
1>------ Build started: Project: MauiApp1, Configuration: Debug Any CPU ------
1>C:\Users\dev\.nuget\packages\microsoft.windowsappsdk\1.0.0\build\Microsoft.WinUI.props(25,3): warning MSB4011: "C:\Users\dev\.nuget\packages\microsoft.windowsappsdk.winui\1.0.0-experimental1\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.props" cannot be imported again. It was already imported at "C:\Users\dev\.nuget\packages\microsoft.windowsappsdk.winui\1.0.0-experimental1\buildTransitive\Microsoft.WinUI.props (25,3)". This is most likely a build authoring error. This subsequent import will be ignored. [C:\Users\dev\source\repos\MauiApp1\MauiApp1\MauiApp1.csproj]
1>C:\Users\dev\.nuget\packages\microsoft.windowsappsdk\1.0.0\build\Microsoft.WinUI.targets(77,3): warning MSB4011: "C:\Users\dev\.nuget\packages\microsoft.windowsappsdk.winui\1.0.0-experimental1\buildTransitive\Microsoft.WinUI.References.targets" cannot be imported again. It was already imported at "C:\Users\dev\.nuget\packages\microsoft.windowsappsdk.winui\1.0.0-experimental1\buildTransitive\Microsoft.WinUI.targets (76,3)". This is most likely a build authoring error. This subsequent import will be ignored. [C:\Users\dev\source\repos\MauiApp1\MauiApp1\MauiApp1.csproj]
1>C:\Users\dev\.nuget\packages\microsoft.windowsappsdk\1.0.0\build\Microsoft.WinUI.targets(78,3): warning MSB4011: "C:\Users\dev\.nuget\packages\microsoft.windowsappsdk.winui\1.0.0-experimental1\buildTransitive\Microsoft.WinUI.AppX.targets" cannot be imported again. It was already imported at "C:\Users\dev\.nuget\packages\microsoft.windowsappsdk.winui\1.0.0-experimental1\buildTransitive\Microsoft.WinUI.targets (77,3)". This is most likely a build authoring error. This subsequent import will be ignored. [C:\Users\dev\source\repos\MauiApp1\MauiApp1\MauiApp1.csproj]
1>C:\Users\dev\.nuget\packages\microsoft.windowsappsdk\1.0.0\build\Microsoft.WinUI.targets(79,3): warning MSB4011: "C:\Users\dev\.nuget\packages\microsoft.windowsappsdk.winui\1.0.0-experimental1\buildTransitive\Microsoft.WinUI.NET.Markup.Compiler.targets" cannot be imported again. It was already imported at "C:\Users\dev\.nuget\packages\microsoft.windowsappsdk.winui\1.0.0-experimental1\buildTransitive\Microsoft.WinUI.targets (78,3)". This is most likely a build authoring error. This subsequent import will be ignored. [C:\Users\dev\source\repos\MauiApp1\MauiApp1\MauiApp1.csproj]
1>C:\Users\dev\.nuget\packages\microsoft.windowsappsdk\1.0.0\build\Microsoft.WinUI.targets(80,3): warning MSB4011: "C:\Users\dev\.nuget\packages\microsoft.windowsappsdk.winui\1.0.0-experimental1\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.targets" cannot be imported again. It was already imported at "C:\Users\dev\.nuget\packages\microsoft.windowsappsdk.winui\1.0.0-experimental1\buildTransitive\Microsoft.WinUI.targets (79,3)". This is most likely a build authoring error. This subsequent import will be ignored. [C:\Users\dev\source\repos\MauiApp1\MauiApp1\MauiApp1.csproj]
1>C:\Users\dev\.nuget\packages\microsoft.windowsappsdk\1.0.0\build\Microsoft.WinUI.targets(82,3): warning MSB4011: "C:\Users\dev\.nuget\packages\microsoft.windowsappsdk.winui\1.0.0-experimental1\buildTransitive\Microsoft.Build.Msix.targets" cannot be imported again. It was already imported at "C:\Users\dev\.nuget\packages\microsoft.windowsappsdk.winui\1.0.0-experimental1\buildTransitive\Microsoft.WinUI.targets (81,3)". This is most likely a build authoring error. This subsequent import will be ignored. [C:\Users\dev\source\repos\MauiApp1\MauiApp1\MauiApp1.csproj]
1>Parsing of manifest successful.
1>
1>MauiApp1 -> C:\Users\dev\source\repos\MauiApp1\MauiApp1\bin\Debug\net6.0-windows10.0.19041\win-x64\MauiApp1.dll
1>Done building project "MauiApp1.csproj".
========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========

6. Start Debugging [F5] -> COMException in bootstrapper:

'MauiApp1.exe' (CoreCLR: DefaultDomain): Loaded 'C:\Users\dev\source\repos\MauiApp1\MauiApp1\bin\Debug\net6.0-windows10.0.19041\win-x64\AppX\System.Private.CoreLib.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'MauiApp1.exe' (CoreCLR: clrhost): Loaded 'C:\Users\dev\source\repos\MauiApp1\MauiApp1\bin\Debug\net6.0-windows10.0.19041\win-x64\AppX\MauiApp1.dll'. Symbols loaded.
'MauiApp1.exe' (CoreCLR: clrhost): Loaded 'C:\Users\dev\source\repos\MauiApp1\MauiApp1\bin\Debug\net6.0-windows10.0.19041\win-x64\AppX\System.Runtime.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'MauiApp1.exe' (CoreCLR: clrhost): Loaded 'C:\Users\dev\source\repos\MauiApp1\MauiApp1\bin\Debug\net6.0-windows10.0.19041\win-x64\AppX\Microsoft.WindowsAppRuntime.Bootstrap.Net.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Exception thrown: 'System.Runtime.InteropServices.COMException' in Microsoft.WindowsAppRuntime.Bootstrap.Net.dll
The program '[16796] MauiApp1.exe' has exited with code 2148734499 (0x80131623).

[MauiApp1.csproj] (https://aka.ms/dc/file?name=Ba7e30b4ab67a4eb6a1a83cd435b10724637738589192396604_MauiApp1.csproj&tid=a7e30b4ab67a4eb6a1a83cd435b10724637738589192396604)

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Original Comments

Feedback Bot on 11/30/2021, 01:49 AM:

We have directed your feedback to the appropriate engineering team for further evaluation. The team will review the feedback and notify you about the next steps.

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Original Solutions

(no solutions)

[Dbquity]

Any advice on this?
I have not yet been able to run a MAUI app on Windows using VS 2022 Preview.

[Dbquity]

I was able to work around this issue by manually changing the very last ItemGroup tag to

<ItemGroup Condition="$(TargetFramework.Contains('-windows'))">
    <!-- Required - WinUI does not yet have buildTransitive for everything -->
    <PackageReference Include="Microsoft.WindowsAppSDK" Version="1.0.0" />
    <PackageReference Include="Microsoft.Graphics.Win2D" Version="1.0.0.30" />
</ItemGroup>

It seems that instead of replacing the contents of that tag, updating the NUGet packages Microsoft.Graphics.Win2D and Microsoft.WindowsAppSDK in step 3 of the repro steps above added another, conflicting tag.

[jfversluis]

The Docs page has been updated and I think the out of the box experience is much better now. If there are still issues, please open a new one with all the (updated) details, thanks!