Unable to Compile Desktop project

[PetarSlavov]

I have the latest version of uno-check 1.1.0-dev.9 and it does not report any problems
Latest version of Uno project templates 4.0.9. I'm creating a net project with dotnet new unoapp-winui-net6. Then opening the project with the latest version of Visual Studio 2022 (17.0.2) and getting rid of all mobile project heads. Leaving only Shared, Wasm, Windows.Desktop and Windows.Desktop.Shared.
I also have the latest SDKs installed 5.0.403 and 6.0.100.

I'm getting two build error which I don't know how to resolve:

This version of WindowsAppSDK requires WinRT.Runtime.dll version 1.3 or greater.
Please update to .NET SDK 5.0.205, 5.0.302, or 5.0.400 (or later).

AND

A referenced assembly was compiled using a newer version of Microsoft.Windows.SDK.NET.dll. Please update to a newer .NET SDK in order to reference this assembly.

[jeromelaban]

This is related to this issue: microsoft/WindowsAppSDK#745

You may need to update this section to later versions of the packages:

uno/src/SolutionTemplate/Uno.ProjectTemplates.Dotnet/content/unoapp-winui-net6/UnoWinUIQuickStart.Windows.Desktop/UnoWinUIQuickStart.Windows.Desktop.csproj

Lines 24 to 27 in 9fd0a0c

	<ItemGroup>
	<FrameworkReference Update="Microsoft.Windows.SDK.NET.Ref" RuntimeFrameworkVersion="10.0.18362.16" />
	<FrameworkReference Update="Microsoft.Windows.SDK.NET.Ref" TargetingPackVersion="10.0.18362.16" />
	</ItemGroup>

[jeromelaban]

.wapproj are not supposed to be used anymore. Which project did you use as base?

[MaiastraMan]

I am using the "Blank App, Packaged with Windows Application Packaging Project (WinUI3 in Desktop)" template. If I double click on the package name in solution explorer, the .wapproj file opens. I also confirmed that the .csproj file contains the above mentioned elements.

[jeromelaban]

Thanks. The template you selected comes from the official WinAppSDK, which is different from the templates coming from Uno. Uno's templates don't have that problem as they're being setup to avoid it.

If you intend to make an Uno app, what made you choose the Blank App, Packaged with Windows Application Packaging Project (WinUI3 in Desktop) template, and not the Uno Platform App template?

[MaiastraMan]

Thank you very much for explaining this to me, to be honest I somehow failed to notice that this repository was for Uno specifically, and my project is not for this platform. Apologies for taking up your time, but just in case it helps anyone else, I managed to fix my problem by removing the following line from my .csproj file: <PackageReference Include="Microsoft.UI.Xaml" Version="2.8.4" />