Back in January Microsoft encrypted all my hard drives without saying anything. I was playing around with a dual boot yesterday and somehow aggravated Secureboot. So my C: panicked and required a 40 character key to unlock.
Your key is backed up to the Microsoft account associated with your install. Which is considerate to the hackers. (and saved me from a re-install) But if you’ve got an unactivated copy, local account, or don’t know your M$ account credentials, your boned.
Control Panel > System Security > Bitlocker Encryption.
BTW, I was aware that M$ was doing this and even made fun of the effected users. Karma.
They do and it auto activates when you add a Microsoft account. It cannot be turned off on the home edition as it doesn’t have the full bitlocker settings. Came across this one on some machine i was working on a while ago and i ended up having to pull the SSD from the customers machine and plug it into something with pro to actually disable bitlocker.