A corrupted Outlook data file (OST) is an Offline Storage Table file that has become damaged due to factors like sudden system crashes, synchronization issues, malware attacks, or large file sizes. When an OST file gets corrupted, users may face difficulties accessing their Outlook emails, contacts, and other data. To restore and access this data, converting the corrupted OST file to a PST (Personal Storage Table) format is often necessary. This is where an OST to PST Converter becomes useful, as it helps repair and convert the damaged OST file into a usable PST format, allowing users to regain access to their Outlook data.