Microsoft.UI.Xaml.2.8 is a version of the Microsoft UI Xaml Library – a set of modern controls and UI components for building Windows desktop applications (both Win32 and UWP) using the Windows App SDK (formerly known as Project Reunion).
You can also download the Microsoft.UI.Xaml 2.8 appx file directly from the Microsoft servers:
WinGet: If your terminal is working, the easiest way to install it is via winstall.app using the following command:winget install -e --id Microsoft.UI.Xaml.2.8 [4]. The "Hidden" Nuget Method
Microsoft.VCLibs.x64.14.00.Desktop.appx.