Over time, as you send and receive thousands of emails, these data files can become fragmented or corrupted. A sudden power loss or a system crash while Outlook is writing to the file can cause structural damage. scanpst.exe scans the file structure, repairs the headers, and resets the file to a healthy state.
The correct location of scanpst.exe is version and architecture specific, primarily residing within the OfficeXX subdirectory of the Microsoft Office installation folder. For Outlook 2016 and later (including Microsoft 365), the canonical path under a Click-to-Run installation is typically C:\Program Files (x86)\Microsoft Office\root\Office16\ . IT administrators should use the command-line search method for rapid discovery across heterogeneous environments. scanpst.exe. location
C:\Program Files\Microsoft Office\Office15\ Over time, as you send and receive thousands