But what if you didn’t take this path? BitLocker on by default? It’s important to keep somewhere safe to avoid possibly losing access to everything on that drive, should something go wrong. The recovery key is your way back in should you lose the ability to sign in to Windows normally, or should you ever need to move the drive to a different machine. It’s important that you take at least one of these options, if not more than one. Prompt to back up your BitLocker recovery key. If you explicitly turn on BitLocker full-disk encryption, at some point in the process you’ll be encouraged to save the recovery key. Either way, if you’re using BitLocker, make sure to back up your recovery key. You can examine all the BitLocker recovery keys associated with your Microsoft Account by visiting, or you can examine the state of each drive, and back up its recovery key manually, by right-clicking on the drive in Windows File Explorer and clicking Manage BitLocker.

BitLocker may be enabled by default without your knowledge.

Recover lost mirc key