Cannot publish freshly created MAUI app as documented

[Dbquity]

Description

Documented steps to publish a MAUI app for Windows fails.

repro sln here: https://github.com/Dbquity/MauiApp10

Steps to Reproduce

1. create a fresh MAUI App with the add project UI in Visual Studio 2022 Community - Preview version 17.2 Preview 6
2. Follow the instructions here: https://docs.microsoft.com/en-us/dotnet/maui/windows/deployment/overview
3. observe this output from executing the described msbuild command:

...
Build FAILED.

"C:\Code\Maui\MauiApp10\MauiApp10.sln" (Publish target) (1:2) ->
"C:\Code\Maui\MauiApp10\MauiApp10.csproj" (Publish target) (2:18) ->
(ResolvePackageAssets target) ->
  C:\Program Files\dotnet\sdk\6.0.300-preview.22204.3\Sdks\Microsoft.NET.Sdk\targets\Microsoft.PackageDependencyResolut
ion.targets(267,5): error NETSDK1005: Assets file 'C:\Code\Maui\MauiApp10\obj\project.assets.json' doesn't have a targe
t for 'net6.0-windows10.0.19041'. Ensure that restore has run and that you have included 'net6.0-windows10.0.19041' in
the TargetFrameworks for your project. [C:\Code\Maui\MauiApp10\MauiApp10.csproj]

    0 Warning(s)
    1 Error(s)

Time Elapsed 00:00:02.99

Version with bug

Release Candidate 2 (current)

Last version that worked well

Unknown/Other

Affected platforms

Windows

Affected platform versions

Windows 10

Did you find any workaround?

Yes. Choosing the Release profile and Windows Machine as target in the Visual Studio UI and then building the project successfully produces a .msix - notice the extra .0 in the target framework identifier net6.0-windows10.0.19041.0:

Build started...
1>------ Build started: Project: MauiApp10, Configuration: Release Any CPU ------
1>You are using a preview version of .NET. See: https://aka.ms/dotnet-core-preview
1>MauiApp10 -> C:\Code\Maui\MauiApp10\bin\Release\net6.0-windows10.0.19041.0\win10-x64\MauiApp10.dll
1>MauiApp10 -> C:\Code\Maui\MauiApp10\bin\Release\net6.0-windows10.0.19041.0\win10-64\AppPackages\MauiApp10_1.0.0.1_Test\MauiApp10_1.0.0.1_x64.msix
1>MauiApp10 -> bin\Release\net6.0-windows10.0.19041.0\win10-x64\AppPackages\MauiApp10_1.0.0.1_Test\MauiApp10_1.0.0.1_x64.msixsym
========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========

Relevant log output

No response

[Dbquity]

This issue was first reported here: https://developercommunity.visualstudio.com/t/Cannot-publish-freshly-created-MAUI-app/10029954

[Dbquity]

It seems the version of the .NET 6 SDK, 6.0.300-preview.22204.3, that installs with VS 2022 Preview - version 17.2 Preview 6 is not in sync with MAUI RC2 on how to identify the Windows target framework:
The former uses net6.0-windows10.0.19041, the latter adds a .0: net6.0-windows10.0.19041.0

[jfversluis]

This is mostly an issue in the docs at this point. The TFM has been updated in our templates but not in the docs. The TargetFramework in the publish command should match the one in your csproj. I have updated the docs to use dotnet publish and also added the new TFM, including a note that you should double-check that the TMF identifiers are the same.