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The Default path for All Microsoft Office Outlook .pst file location is the User data(Your account name)/Local Settings/Application Data/Microsoft/Outlook/ this is where the .pst files are stored by default!!! this goes for All Windows OS! Tuesday, June 05, 2012 12:18 PM.
3a: Close Outlook. You cannot delete a PST file with Outlook open because the file will be in use. 3b: Navigate to the location you just noted down earlier either via My PC or by pasting the file location into the address bar of a new window. 3b 1: Navigate via My PC.