To migrate Outlook OST to PST, open traditional Outlook and go to the Import/Export wizard. There, choose "Export to a file" and then "Outlook Data File (.pst)." This approach needs an OST file that is associated to the profile and is open. If you have orphaned or damaged files, the FixVare OST to PST Converter is a safe solution to convert OST files to PST format. This tool looks at OST files and safely converts emails, contacts, calendars, and attachments into the PST format. The interface is simple to use, which makes the transfer process faster and lets you convert files quickly without losing any data.