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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.
Choose Office Outlook Personal Folders File (.pst) and browse to the new location of your PST file, then click OK two times. Click Set as Default. Now Outlook will use the PST file from the new location as default data storage.