Offline Storage Table (OST) file may get corrupt, damaged or inaccessible due to accidental Exchange account deletion, Server crash, Exchange Server downtime, etc. For accurate recovery of Exchange OST file to restore the email communication it becomes mandatory to perform the OST to PST conversion. Using a third-party tool like Kernel for OST to PST, the damaged OST files can be repaired effectively and can be restored in Outlook PST files.