Windows 3.1 beta crashed on 3rd-party DOS (en.wikipedia.org)

TL;DR: DR-DOS routed around it and it cost MS .28 gigabucks after lawsuits.

Didn't Windows 95 have something similar to only load on DOS 7 ?

Win3.1 didn't crash, what it did do was throw up a fake error msg if you tried to install it on DR-DOS.

"drdos has problems running windows today. And I assume will have more problems in the future"

"You should make sure it has problems in the future :)"

http://edge-op.org/iowa/www.iowaconsumercase.org/011607/0000...

Although Win10 is smiling and waving hello, It's things like the "smile while pulling the trigger" citation that makes me never trust Microsoft.