PST password recovery is MS outlook PST password recovery software which 100% safe and secure PST files to Unlock PST file password. To recover your lost Outlook 2016 PST file password, firstly you need to know exactly the path to the PST file. Follow the steps below to look up your Outlook PST file location. How to reset or recover Outlook data file password. If you are using Outlook, your email, calendar, contacts and task information are stored in a *.pst file. To prevent others from viewing your information on Outlook, you may choose to set a password to the pst file.