I finally made contact with the fellow (Jeff) who had told me that he had lost DVD function when he upgraded from Windows 8.x to Windows 10. We had an incredibly
brief conversation, because he was rushing around, and then he had to leave
immediately after work to rush over to his second job.
Apparently, what really happened is this. Windows 8.x has Windows Media Center/Windows Media Player, and he was using this to play DVDs on his computer. Windows 10 has
removed Windows Media Center. Worse yet, the Windows 10 upgrade removes or deletes the existing Windows Media Center from the "upgraders" computer. So at this point Jeff was left with nothing to play his DVDs with. Microsoft came out with DVD Player software several months after Windows 10 came out. It made this software available to some upgraders free, but other upgraders had to pay $14.99 if they wanted this software. Jeff was in the second group, and he was totally ****** off that they were trying to charge him $14.99 just to get back to where he was before the upgrade. So he installed freeware DVD player software. He did not remember the name of it, but said "it's the one with the orange traffic cone." It turns out this is VideoLAN's
VLC Media Player.
VideoLAN - Official page for VLC media player, the Open Source video framework!
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A good article covering this subject is
Microsoft releases Windows DVD Player for Windows 10 -- free for some, but not for others
The article came out in August 2015 and has accumulated many interesting comments from people about Windows 10.