Filter the shite from Windows 10 and change settings to be more comfortable for you. Cut holes in the sieve to let some shite through or patch it up in other areas you think there is more shite to be filtered.
a0638ed generated the list List_UWPApps in MainWindow to act as the list to describe the checkboxes rendered in the window UWPApps, which cannot access the list.
List_UWPApps does contain the correct data to render the checkboxes as currently described in UWPApps.xaml which can be verified by writing the same code in MainWindow.xaml and loading default.ini in /configuration/, so the solution will likely entail either figuring out how to access the list by some external reference or by moving the declaration of, and possibly generation of the data in the list to a public class.
I am not familiar with exactly how the MVVM pattern should be set up. Emulating the layout of microsoft/WPF_Samples is probably a good baseline.
There are also youtube videos describing the basics such as this one, however I do not think I will be refactoring the code until at least v1.0.0 as I want to get this to a working state first. If someone else would like to move things around to properly seperate the view from the model I would gladly accept the help and trust your judgement until I can figure it out myself.