My one WPF app is using an external dll. I tried to convert the app to UWP by using the same code of WPF but it did not workout since - as expected - the external dll did not work in UWP. However, when I Desktop Bridged that WPF app to UWP it worked - and I can successfully deploy it on my various Windows 10 laptops using App Package - and I've tested that this newly desktop bridged app work there fine . Is this desktop bridged app now a promising candidate for 'Microsoft Store`?
As long as the "external DLL" is included in the app package you submit to the Store this will be a valid candidate for the Microsoft Store.