Outlook cannot synchronize with the Exchange mailbox on the server

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Cause: Your server may be running Windows SBS 2003 Premium Edition and may not have SP2 for ISA Server 2004 Standard Edition installed.

Solution: To enable synchronization between Windows Vista Outlook Client and the Exchange mailbox on the server that is running Windows SBS, download and install SP2 for ISA Server 2004 from the Microsoft Web site (https://go.microsoft.com/fwlink/?LinkId=77017).