You can unlock your PST file by taking help from the manual method. But manual method requires a sufficient amount of time and effort to perform its complicated steps. If you are non - technical or beginner user then, you will not be able to complete the manual method successfully. Hence, I would like to suggest users take help from DRS PST Password Remover software. It is an automated software that requires no manual task or technical skill. With the help of this, you can easily set or remove passwords from PST files. You can download its free version and check its functionality.