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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.
Open a .pst file. If you created a .pst file that does not appear in the Navigation Pane, add the .pst file to Outlook so that you can work with the items in it. On the File menu, point to Open, and then click Outlook Data File. Click the .pst file that you want to open, and then click OK.