Summary: In today’s post, users will learn how to open another user OST file in Outlook 2021, 2019, 2016, 2013 & below. Also, users will get to know about how to access orphan, damaged, inaccessible OST files in MS Outlook, all editions with attached information for good. So, let’s begin. OST is an Outlook data file that stores a copy of your mailbox in the computer’s local storage. The OST file provides functionality to access Outlook mailbox content even without an active internet connection. Users can easily edit the Outlook content using the OST file, and all the changes will…