To manually convert OST to PST, you can utilize Microsoft Outlook's built-in export feature. First, launch Outlook and go to File > Open & Export > Import/Export. Select "Export to a file," then choose "Outlook Data File (.pst)" as the export format. Select the folder or items you wish to export, and the process will save your OST data into a PST file. However, this method requires access to the OST file through Outlook, and it won’t work if the OST file is corrupted or if you don’t have access to the original profile.
 

For a more efficient solution, the BLR OST to PST Converter Tool is designed to streamline the entire process. Unlike the manual method, this tool allows direct conversion of OST files to PST format without the need for Outlook. It supports corrupted, orphaned, or inaccessible OST files and ensures that all your emails, attachments, contacts, and calendar items are safely converted into PST format. The BLR tool not only saves time but also ensures data integrity throughout the conversion, making it the ideal choice for both professionals and non-technical users seeking a hassle-free conversion.