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How to automatically unlock volume encrypted by BitLocker

KB ID: 4085
Product: Veeam Agent for Microsoft Windows | 5.0
Published: 2021-02-15
Last Modified: 2021-03-23
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Challenge

A volume encrypted by Microsoft BitLocker must be automatically unlocked for backup or recovery processes. For example when using Veeam Agent for Windows's backup from storage native snapshots.

More information regarding Veeam Agent for Windows and BitLocker can be found here: https://helpcenter.veeam.com/docs/agentforwindows/userguide/bitlocker.html

 

Cause

BitLocker Auto-unlock is required to utlizie the "Backup from storage native snapshot" feature in Veeam Agent for Windows.

Solution

The following steps document how configure BitLocker to automatically unlock a volume.

  1. Go to Control Panel > System and Security > BitLocker Drive Encryption.
  2. In the list of disks, select the disk that is encrypted by Microsoft BitLocker and click Unlock Drive.
unlockdrive
  1. Depending on the security method, specify the password, the PIN recovery key, or connect the smart card to unlock the drive.
  2. Select the Automatically unlock on this PC check box.
autounlock
  1. Click Unlock.
unlock
If the steps above were performed correctly, the interface will show that the auto-unlock function is enabled by showing an option to "Turn off auto-unlock".
checkautounlock

More information

The steps above may also be performed via PowerShell, to learn more, see Enable-BitLockerAutoUnlock.

 

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