When I have suffered the same issue then my friend suggested my try this PST Password Recovery software because he uses that software. and I have used that software and got a great result with that tool.PST Password Removal software is one such easy solution by which you can easily remove the password of Outlook PST file in an instant way. Moreover, this tool provides the option to change the password of the PST file. you can download this software from here:-https://www.osttopstapp.com/pst-password-recovery.html