If you are unable to open your OST file directly in Outlook, eSoftTools OST to PST Converter Software is a practical solution to this problem. Outlook OST files are server-dependent and therefore cannot be opened without the original profile, but with the help of this tool, you can easily convert the OST file to PST format and access it in Outlook. This software safely recovers emails, contacts, calendars, and attachments while maintaining the original folder structure. Its user-friendly interface makes it easy for even non-technical users to use.