I am getting an error when I try to unlock/open an Outlook PST file that is password-protected. The error reads: “Error while unlocking PST file / Invalid password / Cannot open data file.” I have already tried the password I think is correct and used Outlook’s password recovery option, but the file still won’t open. This PST contains important mail I need to export. Has anyone found a working, safe solution to open a password-protected PST when the password is lost or Outlook refuses it?