To unlock your PST File , you can take help from DRS PST Password Remover. It is a automated tool that can help you to lock or unlock your PST files in a very easy. This software supports both ANSI and UNICODE level of codes. It is a user friendly tool that can be used by any non technical or beginner user. Moreover ,the tool also offers a free demo version to its users.
To know more , visit – https://www.data-recovery-solutions.com/pst-password-remover.php