Scanpst.exe Location for Win8, 8.1, XP, 7 etc.
Outlook 97 / Outlook 98
C:\Program Files\Common Files\Windows Messaging\scanpst.exe
Outlook 2000
C:\Program Files\Common Files\System\MAPI\<locale ID>\NT\scanpst.exe
Outlook 2002/XP
C:\Program Files\Common Files\System\MAPI\<locale ID>\scanpst.exe
Outlook 2003-32 Bit Windows
C:\Program Files\Common Files\System\MSMAPI\<locale ID>
Outlook 2003-64 Bit Windows
C:\Program Files (x86)\Common Files\System\MSMAPI\<locale ID>
Outlook 2007-32 Bit Windows
C:\Program Files\Microsoft Office\Office12
Outlook 2007-64 Bit Windows
C:\Program Files (x86)\Microsoft Office\Office12
Outlook 2013-32 Bit Windows
C:\Program Files\Microsoft Office\Office15
Outlook 2013-64 Bit Windows
C:\Program Files (x86)\Microsoft Office\Office15
Outlook 2016-32 Bit Windows
C:\Program Files\Microsoft Office\root\Office16
Outlook 2016-64 Bit Windows
C:\Program Files (x86)\Microsoft Office\root\Office16