If you’re losing network connectivity with their SBS 2008 server after a few days to a few weeks.  Rebooting SBS 2008 will temporarily resolve the issue.  This issue occurs when you are using a filter driver (commonly a firewall) that utilizes the Transport Driver Interface, which is now being deprecated and replaced with WFP in Vista/2008 and beyond.  If you are experiencing this problem, download the hotfix.

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