BitLocker Unlock Error

Quick Fix

Check your password or recovery key. If you have the recovery key, enter it. If you don’t, use the recovery key file or printout. If it still fails, reboot into safe mode and run chkdsk.

What it Means

The BitLocker Unlock Error appears when Windows cannot decrypt a drive because it can’t verify the password, recovery key, or TPM state. It stops you from accessing data on the encrypted volume.

Possible Causes

• 1
  Wrong password or recovery key entered
• 2
  Corrupted BitLocker metadata or key files
• 3
  TPM disabled, corrupted, or not present
• 4
  Drive has been moved or renamed
• 5
  File system corruption on the encrypted drive
• 6
  BitLocker policy or group policy conflicts

Step-by-Step Solutions

1. Check the password or recovery key

   Make sure you’re entering the exact password or recovery key that was generated when BitLocker was enabled. Even a single typo will trigger the error.

2. Enter the recovery key

   If you have the 48‑digit recovery key, click the recovery key option and paste or type it. This bypasses the TPM and unlocks the drive.

   manage-bde -unlock X: -RecoveryPassword <48‑digit‑key>
3. Verify TPM status

   Open a command prompt as administrator and run manage‑bde -status. If TPM is disabled or not present, enable it in BIOS or use a USB key instead.

   manage-bde -status X:
4. Run chkdsk to repair file system

   File system corruption can prevent BitLocker from unlocking. Run chkdsk with repair options.

   chkdsk X: /f /r
5. Reset BitLocker (data loss)

   If you can’t recover the key and the data isn’t needed, you can turn off BitLocker and reformat the drive. This will erase all data.

   manage-bde -off X:
6. Contact support

   If the drive contains critical data and you can’t unlock it, seek professional data recovery or Microsoft support. Do not attempt further resets that could erase data.

Commands You Can Try