This document discusses how to fix corrupted PST files in Microsoft Outlook. PST files can become corrupted due to system crashes, abrupt Outlook shutdowns, or exceeding file size limits. The document recommends using the ScanPST tool to repair minor corruption issues. For severe corruption, it suggests truncating oversized files or using third-party recovery tools like Kernel for Outlook PST Repair. This software can restore deleted emails and other items from corrupted PST files.