I am having issues getting the SCW extension installed for our Edge Transport Server on Windows Server 2008 R2. I entered the command below: scwcmd register /kbname:Ex2007EdgeKB /kbfile:"E:\Program Files\Microsoft\Exchange Server\Scripts\Exchange2007Edge_WinSrv2008.xml" I pulled this from log file C:\Windows\security\msscw\Logs\SCWRegistrar_log.xml: The Registration-Info XML is invalid, reason: The attribute 'Profile' on the element 'FirewallRule' is not defined in the DTD/Schema. The workaround that I have implemented was to install the SCW extension on a newly built 2008 R0 server (which required some editing to the Exchange2007Edge_WinSrv2008.xml file. I had to change the service pack number to get it to work) and then exported the firewall policy and imported on the 2008 R2 server after hardening the server with SCW without the Edge Transport Server extension installed.