It's not possible to open an OST file directly in Outlook because OST files are associated with an Exchange profile. If the profile is deleted or the server is unavailable, the OST file becomes inaccessible. In this situation, eSoftTools OST to PST Converter software provides a practical solution. This software scans the OST file and converts its data into PST format, which can be easily opened and accessed in Outlook. Using this software, emails, attachments, contacts, and calendar entries can be recovered without any data loss.

Read More:- Open an OST file to Outlook