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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.
To change the default path that Outlook uses for a .pst file, add the ForcePSTPath string value to the registry. To do this, follow these steps: If you are a network administrator and want to specify a different location for using .pst file on a user's computer, you can specify the location for the .pst file in the CIW.