Script Download:ExportOSCEXOContact.zip
http://gallery.technet.microsoft.com/scriptcenter/Export-Contacts-from-OWA-9f8cc0f2/

This script demonstrates how to export contacts in the Default contact folder from Outlook Web App to a comma separated values (CSV) file.

Outlook Web App (OWA) allows you to import multiple contacts in a very simple way. However, it does not allow you to export contact. Therefore, in order to export contacts from the OWA and import in other mail clients, you must find a workaround.

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You can find more All-In-One Script Framework script samples at http://aka.ms/onescriptingallery