What Is a BitLocker Recovery Key?
BitLocker Drive Encryption is a Windows feature that protects your data by encrypting the entire disk. When everything is working normally, BitLocker unlocks automatically. But there are situations where it cannot, and you will be prompted to enter your recovery key instead.
The recovery key is a 48-digit number generated when BitLocker is first activated. Common triggers for needing it include forgetting the unlock password, replacing hardware such as a motherboard, or certain Windows updates that cause BitLocker to detect a change in the system configuration. Without the key, access to the encrypted drive is blocked.
How to Back Up Your Recovery Key
Microsoft account
If BitLocker was enabled on a device signed in with a Microsoft account, the recovery key is usually saved there automatically. Log in to your Microsoft account, navigate to Devices, and look for your BitLocker keys. This is the most convenient option for individual users.
Save to a file
During the BitLocker activation process, you can export the recovery key to a file. Save this to an external drive that is stored separately from the encrypted device. Do not save it on the same machine it is protecting.
Print the recovery key
A printed copy stored securely, such as in a locked drawer or safe, provides a physical backup that is not vulnerable to digital threats. For small businesses, this is a practical option alongside a digital backup.
Active Directory or Azure AD
In a managed business environment, BitLocker recovery keys can be stored centrally in Active Directory or Azure Active Directory. Your IT team can retrieve the key for any enrolled device if needed. If you work with a managed IT provider, confirm with them whether this is in place for your devices.
Best Practice: Multiple Backups
Do not rely on a single backup location. If your Microsoft account access is compromised, or the external drive is lost, a second backup protects you. For business devices, the recommended approach is to have the key stored both in your Microsoft account or Active Directory and as a printed copy held by the business owner or IT manager.
Before creating new backups, check whether a backup already exists. Log in to your Microsoft account to see if the key is already there, and check with your IT team if you are on a managed network.
Blowfish Technology manages BitLocker key storage for businesses across the North West as part of our managed IT service, including IT Support Manchester, IT Support Warrington, IT Support Southport, and IT Support Liverpool.
The Blowfish Technology team. Managed IT, cloud services, software development and connectivity for North West businesses since 1999.