Microsoft OST File Repair Software - Version 3.0.0.7 Microsoft OST File Repair Software repairs corrupted or lost OST files on Windows computers. This software can restore corrupted OST file along with Microsoft Outlook attributes like, emails, contacts, calendar, journals, meetings, appointments, notes, folders, items etc. It supports repair Microsoft OST files created on Outlook 2010, 2007, 2003, 2000 etc. It can repair Outlook attributes safely which are corrupted by over sized OST files.