Problem był dość powszechny na Exchange 2010 i został usunięty przez SP3 (http://support.microsoft.com/kb/2800133/en-us). W tym wątku dyskutowane jest podobne zagadnienie (http://community.spiceworks.com/topic/383116-exchange-2013-unresponsive-cpu-running-100). Diagnostyka pokazała, że: "Well, the problem ended up being that the Web Management Service lost the configuration of what SSL certificate it should be using causing it to not start. Once I was able to get the certificate selected, the service started. A quick reboot of the server and all was fixed."