One or more prerequisites for protecting this data source is missing. Ensure that the following prerequisite software is ...

One or more prerequisites for protecting this data source is missing. Ensure that the following prerequisite software is installed on %ServerName; and/or all nodes in the cluster:  Windows Server 2003 Service Pack 1 (SP1) with Knowledge Base article 940349 (http://go.microsoft.com/fwlink/?LinkId=99034)         - OR - Windows Server 2008 (http://go.microsoft.com/fwlink/?LinkId=128812) Update Rollup 4 for Exchange Server 2007 (http://go.microsoft.com/fwlink/?LinkId=99291) or later