As Palcouk stated, ScanPST is installed by default during any Office install with Outlook. If it's missing then either (1) Outlook isn't installed (2) something has become corrupted or (3) something deleted the file.

The location of <scanPST.exe> depends on several factors

- OS bit version in use

- Office version in use

- bit level of Office version in use

- type of install in the case of '2013 (C2R vs .msi)

On a Win8 x64 system with Off'2010 (x86) and Off'2013 (x86-C2R installed) - i.e. two versions of Outlook being active - the location for ScanPST is as follows

For O'2013

'Windows Drive:Program FilesMicrosoft Office 15rootOffice15'

For O'2010 on the same system

'Windows Drive:Program Files (x86)Microsoft OfficeOffice14

On a Win8 x64 system with only O'2013 x86 installed via the .msi installer - the location is

'Windows Drive:Program Files (x86)Microsoft Office 2013Office15'

(note: don't knowrecall if there any changes made to the default MS Office folder name during the .msi install process so there may be a slight variation but not something that should prevent anyone from finding the folder)

That said, simply doing a search for <scanpst*.*> via Windows Explorer should locate the file if it exists on the system - neither a hidden or system file.