Creating a Msix from a multi project solution that includes a windows project. Can it be done?

[guldud]

I cannot create a Msix file from a windows project.

Nothing works. I keep getting the dreaded NETSDK1047 error that complains about "\obj\project.assets.json' doesn't have a target for 'net8.0/win-x64'". Simply because my SLN has multiple dotnet8 projects.

I've tried everything. With wapproj. Without wapproj and the package manifest in the windows.csproj instead. Every possible combination of MSBuild params. Any dotnet publish combination as well.

To no avail. Actually. I do get a Msix file, but it spits so many NETSDK1047 errors out along the way that it breaks my azure DevOps pipeline.

So. Do any of you guys out there, had any luck in creating a Msix from a SLN that have multiple dotnet 8 class library projects in it ?

[maxkatz6]

Last time I tried wapproj, it just worked with no issues. Just make sure your executable project has these runtime identifiers.

[guldud]

I've tried all kinds RID juggling :) Even conditional csproj RID handling when compiling for windows. Did not work.

In the end I managed to get my azure pipeline to generate a MSIX file for both x86 and x64. Did it with a combination of single file exe deployment using "dotnet publish", followed by appropriate calls to "makeappx".

Next stop is extending the script to automatically upload to Microsoft Store

Thx!

[rubiomiguel06]

I am getting this same error when publishing. The win-x64 folder is not being created at ..\obj\wappublish\. For x86 works fine.
I have added to the Windows project the following:

<PropertyGroup>
    <RuntimeIdentifiers>win-x64;win-x86;win-arm64</RuntimeIdentifiers>
</PropertyGroup>

but still no luck. I have as well run dotnet restore and all the other suggestions mentioned here.

Could you provide more detail on how you fixed the issue?
Or can anyone suggest what might be failing?

Below you can find my Win .csproj and the WAP .wapproj

win .csproj

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <OutputType>WinExe</OutputType>
    <!--If you are willing to use Windows/MacOS native APIs you will need to create 3 projects.
    One for Windows with net9.0-windows TFM, one for MacOS with net9.0-macos and one with net9.0 TFM for Linux.-->
    <TargetFramework>net9.0-windows10.0.26100.0</TargetFramework>
    <Nullable>enable</Nullable>
    <BuiltInComInteropSupport>true</BuiltInComInteropSupport>
  </PropertyGroup>

  <PropertyGroup>
    <ApplicationManifest>app.manifest</ApplicationManifest>
    <SupportedOSPlatformVersion>10.0.17763.0</SupportedOSPlatformVersion>
  </PropertyGroup>

    <PropertyGroup>
	    <RuntimeIdentifiers>win-x64;win-x86;win-arm64</RuntimeIdentifiers>
    </PropertyGroup>
	
  <ItemGroup>
    <PackageReference Include="Avalonia.Desktop" />
    <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
    <PackageReference Include="Avalonia.Diagnostics">
      <IncludeAssets Condition="'$(Configuration)' != 'Debug'">None</IncludeAssets>
      <PrivateAssets Condition="'$(Configuration)' != 'Debug'">All</PrivateAssets>
    </PackageReference>
  </ItemGroup>

  <ItemGroup>
    <ProjectReference Include="..\Avalonia\Avalonia.csproj" />
    <ProjectReference Include="..\Lib\Devices.Win\Devices.Win.csproj" />
  </ItemGroup>

  <ItemGroup>
    <Folder Include="Assets\" />
  </ItemGroup>
</Project>

WAP .wapproj

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="15.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <PropertyGroup Condition="'$(VisualStudioVersion)' == '' or '$(VisualStudioVersion)' &lt; '15.0'">
    <VisualStudioVersion>15.0</VisualStudioVersion>
  </PropertyGroup>
  <ItemGroup Label="ProjectConfigurations">
    <ProjectConfiguration Include="Debug|x86">
      <Configuration>Debug</Configuration>
      <Platform>x86</Platform>
    </ProjectConfiguration>
    <ProjectConfiguration Include="Release|x86">
      <Configuration>Release</Configuration>
      <Platform>x86</Platform>
    </ProjectConfiguration>
    <ProjectConfiguration Include="Debug|x64">
      <Configuration>Debug</Configuration>
      <Platform>x64</Platform>
    </ProjectConfiguration>
    <ProjectConfiguration Include="Release|x64">
      <Configuration>Release</Configuration>
      <Platform>x64</Platform>
    </ProjectConfiguration>
    <ProjectConfiguration Include="Debug|ARM">
      <Configuration>Debug</Configuration>
      <Platform>ARM</Platform>
    </ProjectConfiguration>
    <ProjectConfiguration Include="Release|ARM">
      <Configuration>Release</Configuration>
      <Platform>ARM</Platform>
    </ProjectConfiguration>
    <ProjectConfiguration Include="Debug|ARM64">
      <Configuration>Debug</Configuration>
      <Platform>ARM64</Platform>
    </ProjectConfiguration>
    <ProjectConfiguration Include="Release|ARM64">
      <Configuration>Release</Configuration>
      <Platform>ARM64</Platform>
    </ProjectConfiguration>
    <ProjectConfiguration Include="Debug|AnyCPU">
      <Configuration>Debug</Configuration>
      <Platform>AnyCPU</Platform>
    </ProjectConfiguration>
    <ProjectConfiguration Include="Release|AnyCPU">
      <Configuration>Release</Configuration>
      <Platform>AnyCPU</Platform>
    </ProjectConfiguration>
  </ItemGroup>
  <PropertyGroup>
    <WapProjPath Condition="'$(WapProjPath)'==''">$(MSBuildExtensionsPath)\Microsoft\DesktopBridge\</WapProjPath>
  </PropertyGroup>
  <Import Project="$(WapProjPath)\Microsoft.DesktopBridge.props" />
  <PropertyGroup>
    <TargetPlatformVersion>10.0.26100.0</TargetPlatformVersion>
    <TargetPlatformMinVersion>10.0.16299.0</TargetPlatformMinVersion>
    <DefaultLanguage>en-US</DefaultLanguage>
    <AppxPackageSigningEnabled>True</AppxPackageSigningEnabled>
    <NoWarn>$(NoWarn);NU1702</NoWarn>
    <EntryPointProjectUniqueName>..\Avalonia.Win\Avalonia.Win.csproj</EntryPointProjectUniqueName>
    <GenerateTemporaryStoreCertificate>True</GenerateTemporaryStoreCertificate>
    <GenerateAppInstallerFile>False</GenerateAppInstallerFile>
    <AppxAutoIncrementPackageRevision>False</AppxAutoIncrementPackageRevision>
    <GenerateTestArtifacts>True</GenerateTestArtifacts>
    <AppxBundlePlatforms>x86|x64|arm|arm64</AppxBundlePlatforms>
    <HoursBetweenUpdateChecks>0</HoursBetweenUpdateChecks>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">
    <AppxBundle>Always</AppxBundle>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x86'">
    <AppxBundle>Always</AppxBundle>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM'">
    <AppxBundle>Always</AppxBundle>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
    <AppxBundle>Always</AppxBundle>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">
    <AppxBundle>Always</AppxBundle>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM'">
    <AppxBundle>Always</AppxBundle>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
    <AppxBundle>Always</AppxBundle>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
	  <PlatformTarget>x64</PlatformTarget>
    <AppxBundle>Always</AppxBundle>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x86'">
	  <PlatformTarget>x86</PlatformTarget>
    <AppxBundle>Always</AppxBundle>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
    <AppxBundle>Always</AppxBundle>
  </PropertyGroup>
  <ItemGroup>
    <AppxManifest Include="Package.appxmanifest">
      <SubType>Designer</SubType>
    </AppxManifest>
  </ItemGroup>
  <ItemGroup>
    <Content Include="Images\SplashScreen.scale-200.png" />
    <Content Include="Images\LockScreenLogo.scale-200.png" />
    <Content Include="Images\Square150x150Logo.scale-200.png" />
    <Content Include="Images\Square44x44Logo.scale-200.png" />
    <Content Include="Images\Square44x44Logo.targetsize-24_altform-unplated.png" />
    <Content Include="Images\StoreLogo.png" />
    <Content Include="Images\Wide310x150Logo.scale-200.png" />
    <None Include="Package.StoreAssociation.xml" />
  </ItemGroup>
  <Import Project="$(WapProjPath)\Microsoft.DesktopBridge.targets" />
  <ItemGroup>
    <PackageReference Include="Microsoft.Windows.SDK.BuildTools" PrivateAssets="all" />
  </ItemGroup>
  <ItemGroup>
    <ProjectReference Include="..\Avalonia.Win\Avalonia.Win.csproj" />
  </ItemGroup>
</Project>

[parko65]

Have you checked your configurations of your main app and any other referenced projects. Using Configuration manager check the project contexts are set to x64. They may be AnyCPU.