Exchange 2013 CU1 - Error about MsMpSvc not found on computer '.'.

Hello,

I have installed Exchange 2013 CU1 in my home lab and while everything seem to work normally I have many errors about MsMpSvc not found on computer '.'.

This is the exact error that I can see in the Event Viewer:

Maintenance workitem "FEP.Maintenance.Workitem" (ID: 29) has failed. Health Manager has detected it is either set to run once and failed, or has been failing consistently. Maintenance workitem failure could cause monitoring gap and should be investigated.
The error message from the last result is:
System.InvalidOperationException: Service MsMpSvc was not found on computer '.'. ---> System.ComponentModel.Win32Exception: The specified service does not exist as an installed service
   --- End of inner exception stack trace ---
   at System.ServiceProcess.ServiceController.GenerateNames()
   at System.ServiceProcess.ServiceController.get_ServiceName()
   at System.ServiceProcess.ServiceController.GenerateStatus()
   at System.ServiceProcess.ServiceController.get_Status()
   at Microsoft.Exchange.Monitoring.ActiveMonitoring.FEP.FEPDiscovery.DoWork(CancellationToken cancellationToken)
   at Microsoft.Exchange.WorkerTaskFramework.WorkItem.Execute(CancellationToken joinedToken)
   at Microsoft.Exchange.WorkerTaskFramework.WorkItem.<>c__DisplayClass2.<StartExecuting>b__0()
   at System.Threading.Tasks.Task.Execute()

I have alrealy search on the Exchange 2013 forum if anyone have this error but I can't find a topic about this problem.

Thank you so much for your help.