When you installed Windows 10, the computer was no longer under your total control.
Well, no kidding!
(There was a 4 letter word that I was going to use instead of kidding.)
Ummm, that happened with Windows versions long before 10.
At least until 10, you had the ILLUSION of control...
But for example, I run Win7, and I can tell you that Windows Updates have changed my security and user preference settings numerous times in the past, and I've had to discover and revert them to my own.