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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.
Ensure that correct Outlook data file is set as default. Click on Start > Control Panel > Mail > Show Profiles > Properties > Data Files > Select the correct .pst file and click on Set as default. This might work just to get outlook started. But I can already do that by just opening and closing outlook 3\4 times.