how to get bitlocker security key if forgotten

If you have forgotten your BitLocker recovery key, the first step is to determine where it may have been automatically backed up. Many Windows devices save the recovery key to the Microsoft account that was used to sign in when BitLocker was enabled. You can check by signing in to https://account.microsoft.com/devices/recoverykey from another device. If the key is associated with your account, it will be listed there along with the device name or Key ID.

If the device is managed by an organization, such as a workplace or school, the recovery key may be stored in Microsoft Entra ID (formerly Azure AD) or Active Directory. In that case, contact your IT administrator and provide them with the BitLocker Recovery Key ID displayed on the recovery screen so they can locate the correct key.

If you manually saved or printed the recovery key when BitLocker was enabled, check any USB drives, printed documents, password managers, or secure file storage locations where you may have stored it. The recovery key is a 48-digit numerical code.

If you have access to another administrator account on the same computer and the drive is currently unlocked, you may be able to view the recovery key by opening an elevated Command Prompt and running manage-bde -protectors -get C: (replace C: with the appropriate drive letter if necessary). This only works if the drive is already unlocked and Windows is running normally.

If none of these options locate the recovery key, there is unfortunately no supported method to recover or bypass BitLocker encryption. Microsoft does not keep a copy of your recovery key, and the encryption is designed to prevent access without it. If the key cannot be found, the only remaining option is to erase the encrypted drive and reinstall Windows, which will permanently remove any data stored on the encrypted volume.

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hth

Marcin