Ensure your Package.appxmanifest has the correct target and min versions.
<muxc:NavigationView PaneDisplayMode="LeftCompact"> <muxc:NavigationView.MenuItems> <muxc:NavigationViewItem Icon="Home" Content="Home"/> <muxc:NavigationViewItem Icon="Setting" Content="Settings"/> </muxc:NavigationView.MenuItems> </muxc:NavigationView> microsoft.ui.xaml.2.4 package