Hi,
You could try the following instruction to reset password of Bitlocker:
- Click Start, and then select Control Panel. Control Panel opens in a new window.
- Select System and Security, and then select BitLocker Encryption Options.
- To change your PIN, select Manage Your PIN. Type your new PIN into both fields and select Reset PIN.
- To change your password, select Manage Your Password. Enter your new password into both fields and select Reset Password.
Best regards.
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