Change in Exchange 2010 SP1 CAS static port configuration

For those who are using Exchange 2010 DAG and a Network Load Balancer, note that there is a small difference between RTM and SP1. If you choose to use static ports for your Client Access Servers, for the Address Book Services you would edit the located in: “C:\Program Files\Microsoft\Exchange Server\V14\Bin” But with SP1 (directly installed or upgraded from RTM), the location has changed to the registry: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeRpc\ParametersSystem You have to make a new REG_DWORD with the value “TCP/IP Port”

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