As we know, both OST and PST files are associated with Microsoft Outlook and are used to store data such as emails, calendars, and more. OST file saves the synchronized data of the Exchange mailbox, and it even allows users to access the data when there is no connection. However, several risks can lead to OST file corruption, making it impossible to access the data stored within them. To address these issues, many users choose to convert OST files to PST format. Besides corruption, several other factors can necessitate this conversion.