Using Powershell To Recover Bitlocker Key

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Introduction

PowerShell can be used to retrieve BitLocker recovery keys efficiently.
The primary command used is Get-BitLockerVolume with the -MountPoint parameter.
For domain environments, BitLocker keys can be retrieved from Active Directory using PowerShell scripts.
Recovery keys can also be found in your Microsoft account if BitLocker was set up by the user.
Offline methods include checking printouts, saved files, or USB drives where the key might have been stored.

Open PowerShell as Administrator: Press Windows Key + X and select Windows PowerShell (Admin).
Retrieve Key: Use the command (Get-BitLockerVolume -MountPoint C).KeyProtector to get the recovery key for drive C.
Specify Mount Point: Replace C with the actual drive letter if different.
Example Command: (Get-BitLockerVolume -MountPoint D).KeyProtector for drive D.
Output: The command will display the recovery key associated with the specified drive.

Script Example: Use a PowerShell script to query Active Directory for BitLocker keys.
Single Computer: Retrieve keys for a single computer using [Get-ADObject](prompt://ask_markdown?question=Get-ADObject) with the [msFVE-RecoveryInformation](prompt://ask_markdown?question=msFVE-RecoveryInformation) filter.
Multiple Computers: Modify the script to run for a list of computers.
Security: Ensure the script does not expose keys unnecessarily.
Example Script: $computer = Get-ADComputer computername; Get-ADObject -Filter 'objectClass -eq "msFVE-RecoveryInformation"' -SearchBase $computer.DistinguishedName -Properties whenCreated, msFVE-RecoveryPassword | Sort whenCreated -Descending | Select whenCreated, msFVE-RecoveryPassword

Access Microsoft Account: Open a web browser and go to https://account.microsoft.com/devices/recoverykey.
Login: Sign in with the Microsoft account used to set up BitLocker.
Find Key: The recovery key should be listed under the device details.
IT Setup: If an IT professional set up BitLocker, the key might be in their account.
Support: Microsoft support cannot reset or access lost recovery keys.