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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.
A PST file is a personal folder file in Microsoft Outlook. In Outlook, the storage limit for a single user's .PST file is 2 GB. PST stands for personal storage. Ask your questions about Exchange at ITKnowledgeExchange.com.