Summary 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.

This article provides information to back up your BitLocker recovery key. To learn how to verify if you have a BitLocker recovery key backed up to you Microsoft or work or school account, see Find your BitLocker recovery key. Tip If you're an IT pro looking for more details, see the BitLocker recovery documentation.

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.

Open BitLocker Drive Encryption Next to each drive there's a list of allowed operations. To enable encryption, select the option Turn on BitLocker Select an unlock option and back up the recovery key The drive will begin the encryption process. This can take some time to complete, but you can continue to use your device while it progresses

How does BitLocker work in Windows? How do I back up my BitLocker recovery key? What is BitLocker in Windows? BitLocker is a Windows security feature that protects your data by encrypting your drives. This encryption ensures that if someone tries to access a disk offline, they won’t be able to read any of its content.

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： 可能需要为数据或外部驱动器提供 BitLocker 恢复密钥，例如，如果忘记了解锁密码： 本文提供的信息有助于查找 BitLocker 恢复密钥。

Zusammenfassung Ein BitLocker-Wiederherstellungsschlüssel ist erforderlich, wenn BitLocker ein verschlüsseltes Laufwerk in Windows nicht automatisch entsperren kann. Dies ist eine 48-stellige Nummer, mit der Sie den Zugriff auf Ihr Laufwerk wiederherstellen können.

Talvez seja necessário fornecer uma chave de recuperação do BitLocker para dados ou unidades externas, por exemplo, se você esqueceu a senha de desbloqueio: Este artigo fornece informações para ajudá-lo a localizar sua chave de recuperação do BitLocker.

Ringkasan Kunci pemulihan BitLocker diperlukan ketika BitLocker tidak dapat membuka drive terenkripsi secara otomatis di Windows. Ini adalah nomor 48 digit yang memungkinkan Anda mendapatkan kembali akses ke drive Anda.

本文提供有关备份 BitLocker 恢复密钥的信息。 若要了解如何验证是否Microsoft或工作或学校帐户备份了 BitLocker 恢复密钥，请参阅 查找 BitLocker 恢复密钥。 提示 如果你是 IT 专业人员，正在寻找更多详细信息，请参阅 BitLocker 恢复文档。