WinUI 2.8 introduced several key features for UWP and XAML Island apps, most notably , which allows developers to embed the Chromium-based Edge engine directly into native apps. It also set the minimum supported Windows 10 version to Build 17763 [3].
Once you have downloaded Microsoft.UI.Xaml.2.8.appxbundle (or the .appx file), there are three methods to install it. microsoft.ui.xaml.2.8 appx download