A frequent statement (complaint) on forums is that ScanPST is absolutely not present on the user’s computer. The reality is that ScanPST is always and automatically installed with Outlook, without exception. The only reasons that it would be missing would be that it has been explicitly deleted or the hard drive has become corrupted, something that would be a very rare occurrence.
The most common reason for people thinking that ScanPST is not present is due to do a file search without including <system files> as shown in the following video:
The location of ScanPST depends on a number of factors which include the version of Outlook, the bit version of Office installed and the type of installer used, specifically click-to-run or .msi.
The actual locations of ScanPST are
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Outlook 2016 – 32bit
Win-32bit C:\Program Files (x86)\Microsoft Office\Office16
Win-64bit C:\Program Files\Microsoft Office\Office16\root\office16
Click2Run C:\Program Files\Microsoft Office 16\root\office16
Outlook 2016 – 64bit
C:\Program Files\Microsoft Office\Office16
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Outlook 2013 – 32bit
Win-32bit C:\Program Files (x86)\Microsoft Office\Office15
Win-64bit C:\Program Files\Microsoft Office\Office15\root\Office15
Click2Run C:\Program Files\Microsoft Office 15\root\office15
Outlook 2013 – 64bit
C:\Program Files\Microsoft Office\Office15
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Outlook 2010 – 32bit
Win-32bit C:\Program Files (x86)\Microsoft Office\Office14
Win-64bit C:\Program Files\Microsoft Office\Office14
Outlook 2010 – 64bit
C:\Program Files\Microsoft Office\Office14
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Outlook 2007
Win-32bit C:\Program Files (x86)\Microsoft Office\Office12
Win-64bit C:\Program Files\Microsoft Office\Office12
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Outlook 2003
Win-32bit C:\Program Files (x86)\Common Files\System\MSMAPI\<locale ID>
Win-64bit C:\Program Files\Common Files\System\MSMAPI\<locale ID>
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