Now, all I have to say is that the best way to solve the problem is to open Outlook PST files without using Outlook. I came across the eSoftTools Outlook PST Recovery Software, which quickly and easily restores and migrates PST file data. The PST file has no size restrictions, which is the program's best feature. PST files in ANSI and UNICODE formats can also be recovered. As a result, I was able to use this software to restore all of my files from 2007 to the present. It was also capable of recovering password-protected PST files.