Windows Communication Foundation (WCF) is a communication infrastructure that is used to create distributed applications. The following lists the requirements that enable WCF to run.
WCF is installed by default on Windows Vista.
WCF can also be installed on Windows XP SP2, Windows Server 2003 R2, or Windows Server 2003 SP1.
Note The Message Queuing (MSMQ) functionality of WCF is supported only on Windows Vista, Windows Server 2003 R2, Windows Server 2003 SP1, and Windows XP Professional.