Cannot unlock BitLocker drive, how to recover lost data?

Posted by Tim to BitLocker Recovery Tips on March 19th, 2020

I have a BitLocker encrypted external HDD. I plugged it to pc with usb then i unlocked my drive on Win10 with my password as usual then i was copying the data from my unlocked BitLocker drive to another non-encrypted drive. Then power cut suddenly. After that i cannot access my BitLocker drive anymore. When I try to unlock that drive from Windows Explorer pop-up says "BitLocker drive encryption on this drive is not compatible with your Windows. Try to unlock it with newer version of Windows." without password and recovery key input options. I also tried repair-bde without success.

There are several solutions to solve 'Cannot unlock BitLocker drive'.

Solution 1: Check connection

We suggest you remove BitLocker drive from the computer, then re-attach the drive on a different port.

Solution 2: Update BIOS

Contact to the manufacturer and check for the latest updates available for the BIOS.

Solution 3: Try another Windows

If BitLocker drive is encrypted on Windows 7/8, this BitLocker drive cannot be read on Windows 10 as Windows 10 uses XTS-AES encryption algorithms and old Windows uses AES encryption algorithms, you need to try it on another Windows 7/8 computer.

If BitLocker drive is encrypted on Windows 10 and chose 'New encryption mode', this BitLocker drive cannot read on Windows 7/8 as new XTS-AES encryption algorithm is compatible with old Windows version, you need to try it on another Windows 10 computer.

Solution 4: BitLocker data recovery

M3 BitLocker Recovery is a professional BitLocker data recovery software which can recover lost data from formatted, corrupted, inaccessible, failed BitLocker drive, recover lost data after BitLocker encryption/decryption stuck, interrupted, hung, failed, suspended, frozen as long as you have the password or 48-digit BitLocker recovery key. M3 BitLocker Recovery supports both AES and XTS-AES encryption algorithms.

Tutorial to recover lost data from BitLocker drive with M3 BitLocker Recovery

Step 1: Download, install and launch M3 BitLocker Recovery on your computer.

BitLocker data recovery software

Step 2: Select the inaccessible BitLocker drive and then click Next to continue.

Step 3: Enter the password or 48-digit BitLocker recovery key.

Scan the lost data from BitLocker drive

Step 4: Scan the lost data from inaccessible BitLocker drive.

Data recovery from stuck BitLocker drive

Step 5: After your files are found, please select them and click "Recover" to save.

Recover lost data from BitLocker drive

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