> Have you tried using VLC, which should be fully compatible with Window 10?
> Download here: http://www.videolan.org/vlc/download-windows.it.html
I appreciate the massive undertaking that collecting all this stuff has been for you, but the original poster is correct, this isn't a solution.
Here's the thing....
If a video doesn't play properly in WMP then that means any front-end that uses either direct show or a WMP plugin to play videos isn't going to be able to use the videos.
I hope you don't take this reply the wrong way, I'm just trying to be to the point.