We have set up a kms server in our enviroment for activations of Office 2010, and Windows 7 we have went through the deplyment guide for this procedure and everything is setup according to the guide from Microsoft. Yet the clients are not automatically being discovered by the kms server and activating. If we run the commands to connect and activate Offfice 2010, or windows 7 on every client. The activation process works without issue. The clients that will be connecting to the KMS server are running Mcafee 8.7i, my question is does Mcafee block port 1688, do I have to allow an port 1688 in the Mcafee config?. Port 1688 is the default port that kms servers use.
I will suggest you to look at Access protection log file,look with AP category is blocking KMS Exes and add to exlcussion by editing the corresponding AP policy.