How to find your BitLocker recovery key - and save a secure backup copy before it's too late
Briefly

Windows 11 continues the trend of providing security features like BitLocker device encryption, which safeguards your system drive and personal data. If your system's boot integrity is compromised, you may need a 48-digit recovery key to unlock your data. This key is particularly crucial during unexpected access scenarios, like firmware updates or when booting from external devices, where authorization can't be confirmed. Users are urged to store their recovery key safely, as losing it could lead to complete inaccessibility of files.
Without the BitLocker recovery key, accessing your files becomes impossible, highlighting the importance of always having immediate access to this key.
In cases where Windows cannot verify your access due to changes in the system, such as firmware updates or booting from an external drive, you'll be prompted for your recovery key.
Read at ZDNET
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