A BitLocker recovery key is needed when BitLocker can’t automatically unlock an encrypted drive in Windows. This is a 48‑digit number that lets you regain access to your drive.

A BitLocker recovery key is needed when BitLocker can’t automatically unlock an encrypted drive in Windows. This key, which is a 48-digit number, is used to regain access to the drive.

For devices managed by an organization, BitLocker Drive Encryption is usually managed by the IT department, as encryption might be required by organizational policies.

Windows requires a BitLocker recovery key when it detects a possible unauthorized attempt to access the data. This can also happen if you make changes to the hardware, firmware, or software, which BitLocker cannot distinguish from a possible attack.

Entering the recovery key allows Windows to start, but the prompt returns on the next boot. PXE or network boot is configured ahead of the local disk in firmware boot order.

摘要 当 BitLocker 无法在 Windows 中自动解锁加密驱动器时，需要 BitLocker 恢复密钥。 这是一个 48 位数字，可让你重新获得对驱动器的访问权限。 在启动期间，系统可能会提示你输入 BitLocker 恢复密钥，因为存在安全风险或硬件更改：

If you’ve encrypted your device, you’ll need your BitLocker key to complete this task. If you don’t know your BitLocker key, see Find your BitLocker recovery key.

In an environment that has Microsoft BitLocker Administration and Monitoring (MBAM) deployed, users cannot use the MBAM console to retrieve the BitLocker recovery key to recover an encrypted disk volume.

É necessária uma chave de recuperação BitLocker quando o BitLocker não consegue desbloquear automaticamente uma unidade encriptada no Windows. Este é um número de 48 dígitos que lhe permite recuperar o acesso à unidade.

When you first sign in or set up a device with a Microsoft account, or work or school account, Device Encryption is turned on and a recovery key is attached to that account. If you're using a local account, Device Encryption isn't turned on automatically.