Recently my KMS host on windows server 2012 quit issuing licenses. I followed the MS procedure for my new KMS clients but they return an error stating they are unable to contact the KMS host. I verifed the software protection services is running, the firewall is turned off(temporarily), and i verified the proper DNS records are present. I can successfully check the license status of all my clients using the Volume Activation Management Tool and change product keys as well. Any suggestions?