Have you tried VLC?
YES!!! and 5K!!!!
Microsoft version works for about half the DVDs.
The others are good cause they play on my wife’s laptop.
If you use VLC( which I do), you need the version 2.2.3 not 2.2.4 or after. 2.2.3 will play all files I know of. The new version would not play mp4, m4p. I had to back up one version.