The drive protected by bitlocker is already unlocked but not accessible

When accessing a Bitlocker encrypted external drive with "auto-unlock" enabled, Windows 10 reports: "The drive protected by Bitlocker is already unlocked" but File Explorer does not allow access to the files on the drive, even the drive still appears with "Locked" icon in File Explorer.

Following are two solutions to solve "The drive protected by bitlocker is already unlocked but not accessible" problem.

Solution 1: Disable/Enable "auto-unlock"

1. Right click Start menu and open Control Panel.

2. Double click "Bitlocker Drive Encryption" in Control Panel.

3. Click "Turn off auto-unlock" for the affected drive to turn auto-unlock off, there will be a slight delay after turning it off.

4. Then, click the same option again to re-enable "auto-unlock". The drive should be accessible in File Explorer again.If Bitlocker encrypted drive is still not accessible, please try solution 2 to recover data from inaccessible Bitlocker encrypted drive.

Solution 2: Data recovery from inaccessible Bitlocker encrypted drive

M3 Bitlocker Recovery is a professional Bitlocker data recovery software which can recover lost data from formatted, inaccessible, corrupted, failed, damaged, deleted or lost Bitlocker encrypted partition, recover data after Bitlocker encryption failed, interruped, stuck, froze, recover data after Bitlocker decryption failed, interruped, stuck, froze, etc.

Tutorial for recover deleted/lost files from Bitlocker encrypted drive

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

Select the inaccessible Bitlocker encrypted drive and then click Next.

M3 Bitlocker Recovery to recover data from inaccessible Bitlocker encrypted drive

Step 2: Enter the password or 48-digit recovery key to decrypt data from inaccessible Bitlocker encrypted drive.

Bitlocker data recovery software

Step 3: M3 Bitlocker Recovery is scanning lost data from inaccessible Bitlocker encrypted drive.

Scan lost data from inaccessible Bitlocker encrypted drive

Step 4: After the data is found, please select them and click "Recover" to start data recovery from inacessible Bitlocker encrypted drive.

Recover data from inaccessible Bitlocker encrypted drive