Content Faulty hard drives or disk errors can corrupt the Outlook data stored locally. This creates crashes that seem random—until you dig into the hardware logs. Once PSTs start climbing past 2 GB, things get shaky. Outlook slows down, crashes randomly, or fails to load entirely. Users often turn to Microsoft’s ScanPST tool, but it struggles with large files Fix Outlook and Office 365 Errors 2025 and doesn’t always finish the job. ...