I got two error in the MAUI project when I try to run the project

Question

Below I attached the error message and screenshot:

Severity	Code	Description	Project	File	Line	Suppression State
Error	APPX0002	Task 'WinAppSdkGenerateAppxPackageRecipe' failed. The specified module could not be found
	MauiAppDemo	C:\Users\Primouser\.nuget\packages\microsoft.windowsappsdk\1.3.230724000\buildTransitive\Microsoft.Build.Msix.Packaging.targets	1587

	
Error	MSB4018	The "WinAppSdkGenerateAppxPackageRecipe" task failed unexpectedly.
System.ComponentModel.Win32Exception (0x80004005): The specified module could not be found
   at Microsoft.Build.Msix.MrmSupportLibrary.Load(String mrmSupportLibraryPath)
   at Microsoft.Build.Msix.MrmSupportLibraryResourceIndexMap..ctor(String mrmSupportLibraryPath, String projectDir)
   at Microsoft.Build.Msix.ResourceIndexMap.Create(String mrmSupportLibraryPath, Boolean useResourceIndexerApi, String projectDir, ITaskItem[] indexedPayloadFiles)
   at Microsoft.Build.Msix.Recipe.WinAppSdkGenerateAppxPackageRecipe.ExecuteImplementation()
   at Microsoft.Build.Msix.AppxPackagingTaskHelper.Execute(String file)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.Build.Msix.AppxPackagingTaskHelper.Execute(String file)
   at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
   at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__26.MoveNext()	MauiAppDemo	C:\Users\Primouser\.nuget\packages\microsoft.windowsappsdk\1.3.230724000\buildTransitive\Microsoft.Build.Msix.Packaging.targets	1587	

Answer 1

Hello,

In this similar issue in MSB4018 WinAppSdkGenerateAppxPackageRecipe .NET Maui compile error #13117, a known solution was proposed by user samsengupta.

Since this error was reported on line 1591 of .nuget\packages\microsoft.windowsappsdk\1.1.5\buildTransitive\Microsoft.Build.Msix.Packaging.targets, that indicated an appx/msix packaging issue, which is handled by the UWP workload, so I tried installing the UWP workload in Visual Studio 2022, and this fixed the problem for me.Note that on the fresh Windows 10, Visual Studio 2022 install, it worked without needing the UWP workload installed at all, so it seems like whatever was stale in the repro machine was freshened up by the UWP workload install.

Update:

The error codes, causes and solutions for these four new errors have been explained in detail in the official documentation. Please refer to the following documentation:

• NETSDK1147: Missing workload for specified target framework.
• NuGet Error NU1012.

Best Regards,

Alec Liu.

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