An owner or administrator of your device activated BitLocker protection (also called device encryption on some devices) through the Settings app or Control Panel: In this case the user activating BitLocker either selected where to save the key or (in the case of device encryption) it was automatically saved to their Microsoft account.Your device is a modern device that meets certain requirements to automatically enable device encryption: In this case, your BitLocker recovery key is automatically saved to your Microsoft account before protection is activated.There are three common ways for BitLocker to start protecting your device. How Was BitLocker Activated On My Device?
