After you install Microsoft Exchange Server 2013 Cumulative Update 5, your monitoring solution indicates that the Microsoft Exchange Shared Cache Service restarts frequently.
This problem occurs because the managed availability probes that monitor this service have a time-out value that is too sensitive for standard operation. This causes the managed availability process to restart the service.
As of Exchange Server 2013 Cumulative Update 5, this notice and the frequent restarts of the managed availability process are considered not to be a concern.
Therefore, you can safely ignore the problem.
Microsoft has published a Windows PowerShell script that you can use to disable the probes to prevent the Exchange Shared Cache service from restarting.