The location of scanpst.exe is not at all based on the operating system, it is actually based on Microsoft Outlook version. What is your current Outlook version? I can show you the locations of scanpst.exe according to Outlook's version:
- In MS Outlook 97/98: C:\Program Files\Common Files\Windows Messaging\scanpst.exe
- In MS Outlook 2000: C:\Program Files\Common Files\System\MAPI<locale ID>NT\scanpst.exe
- In MS Outlook 2002/XP: C:\Program Files\Common Files\System\MAPI<locale ID>scanpst.exe
- In MS Outlook 2003: C:\Program Files\Common Files\System\MSMAPI<locale ID>
- In MS Outlook 2007: C:\Program Files\Microsoft Office\Office12
- In MS Outlook 2010: C:\Program Files\Microsoft Office\Office14
- In MS Outlook 2013: C:\Program Files\Microsoft Office\Office15
I've found this information here in this blog post:
How to Repair PST File of Microsoft Outlook?
I hope this would be useful.
Thanks and kind regards.