如果 Windows 检测到对 PC 操作系统驱动器的未经授权的访问或攻击，它可能会请求BitLocker恢复密钥。^(BitLocker)过于频繁地输入不正确的PIN或^(PIN)更改 BIOS 启动设备^{(changing your BIOS boot device)}也会触发BitLocker进入恢复模式。

如果您找不到您的BitLocker 驱动器加密^{(BitLocker Drive Encryption)}恢复密钥，我们将向您展示查找位置。

检查您的 Microsoft 帐户

^(Did)在BitLocker^(BitLocker)中加密您的驱动器时，您是否选择了“保存^(Save)到您的Microsoft帐户”选项？在 Web 浏览器中访问https://account.microsoft.com/devices/recoverykeyMicrosoft帐户。您可以在任何设备（Windows、 Mac^(Mac)、iOS 或Android）上使用任何 Web 浏览器。

如果您有多个Microsoft帐户，请登录与您要解锁的计算机关联的帐户。您会在 PC 名称或型号下方找到恢复密钥。

“密钥 ID”是BitLocker恢复密钥标识符，而不是恢复密钥。“恢复密钥”列中的 48 个带连字符的数字是解锁BitLocker加密驱动器所需的。

如果您的设备有多个恢复密钥，请使用最近的条目（检查“密钥上传日期”）来解锁您的硬盘。如果最新的恢复密钥不起作用，请尝试其他恢复密钥。

注意：如果您在激活BitLocker^(BitLocker)时使用的是工作或学校帐户，则可能无法在您的个人Microsoft帐户中找到您的恢复密钥。请联系你的组织或系统管理员，以帮助找到你在组织的Azure AD帐户 中丢失的BitLocker恢复密钥。^(BitLocker)

查找恢复 USB 驱动器

您的BitLocker恢复密钥可能位于外部存储设备上。将^(Insert)您的USB闪存驱动器插入另一台计算机，并检查是否有包含您的恢复密钥 的PDF或TXT文件。^(TXT)

如果找到恢复密钥，请将USB驱动器插入计算机并按照屏幕上的说明进行操作。您还可以在BitLocker^(BitLocker)恢复屏幕 上键入恢复密钥。

检查您的云存储帐户

您的BitLocker恢复密钥可能在您的云存储中。如果 OneDrive 或Google Drive 链接到您的 Windows PC^{(Google Drive are linked to your Windows PC)}，我们建议运行搜索词，例如“bitlocker”、“recovery key”、“recovery”等。

注意标题/名称匹配的TXT或PDF文件。我们建议打开具有不同名称/标题的文档——您可能会在其内容中找到您的恢复密钥。

如果找不到任何匹配的文档，请将搜索扩展到云存储的“垃圾箱”或“垃圾箱”文件夹。

查找打印^(Printout)件或纸质文档^{(Paper Document)}

激活BitLocker^(BitLocker)时，您可能已将恢复密钥打印在纸上。检查您存放重要文件的位置，以便打印出一长串带连字符的数字。

如果找不到^(Find)恢复密钥^{(Recovery Keys)}怎么办

^{(Microsoft Support)}如果丢失或丢失，Microsoft 支持无法帮助你恢复或重新创建BitLocker恢复密钥。^(BitLocker)如果找不到您的BitLocker恢复密钥 ，请启动到 Windows 恢复环境并重置您的计算机。^{(Boot into the Windows Recovery Environment)}

请注意，重置您的计算机将删除您的所有文件、应用程序和设置。如果您没有备份，我们建议您在重置 PC 之前多花点时间找到您的恢复密钥。

How to Find Your Bitlocker Recovery Key in Windows

Windows might requeѕt a BitLоcker recovery key if it dеteсts υnauthоrized access or attacks on your PC’s operating system drive. Entering an incorrеct PIN too often or changing your BIOS boot device can also trigger BitLocker into recovery mode.

If you can’t find your BitLocker Drive Encryption recovery key, we’ll show you where to look.

Check Your Microsoft Account

Did you choose the “Save to your Microsoft account” option when encrypting your drive in BitLocker? Visit https://account.microsoft.com/devices/recoverykey in a web browser and sign in to your Microsoft account. You can use any web browser on any device—Windows, Mac, iOS, or Android.

If you have multiple Microsoft accounts, sign in to the account linked to the computer you want to unlock. You’ll find the recovery key below your PC’s name or model number.

The “Key ID” is the BitLocker recovery key identifier, not the recovery key. The 48 hyphenated digits in the “Recovery Key” column are what you need to unlock the BitLocker-encrypted drive.

If your device has multiple recovery keys, use the most recent entry (check the “Key upload date”) to unlock your hard drive. Try other recovery keys if the newest one doesn’t work.

Note: You may not find your recovery key in your personal Microsoft account if you used a work or school account when activating BitLocker. Contact your organization or system administrator to help find your lost BitLocker recovery key in the organization’s Azure AD account.

Find a Recovery USB Drive

Your BitLocker recovery key could be on an external storage device. Insert your USB flash drive(s) into a different computer and check for PDF or TXT files containing your recovery key.

If you find the recovery key, insert the USB drive into your computer and follow the on-screen instructions. You could also type the recovery key on the BitLocker recovery screen.

Check Your Cloud Storage Account

Your BitLocker recovery key could be in your cloud storage. If OneDrive or Google Drive are linked to your Windows PC, we recommend running a search for terms like “bitlocker,” “recovery key,” “recovery,” etc.

Watch out for TXT or PDF files with matching titles/names. We recommend opening documents with different names/titles—you might find your recovery key in their content.

Extend your search to the “Trash” or “Bin” folder of your cloud storage if you don’t find any matching documents.

Look for a Printout or Paper Document

You might have printed your recovery key on paper when you activated BitLocker. Check where you stow important documents for any printout with a long string of hyphenated digits.

What to Do If You Can’t Find Your Recovery Keys

Microsoft Support can’t help you recover or recreate your BitLocker recovery key if lost or missing. Boot into the Windows Recovery Environment and reset your computer if you can’t find your BitLocker recovery key.

Note that resetting your computer will delete all your files, apps, and settings. If you don’t have a backup, we recommend taking more to find your recovery key before resetting your PC.

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