One of the components of AEM could not start. As a result, AEM will not be processing error reports.
The failure may have happened due to several reasons. Information about the failure is available in the associated Event and Alerts.
The description of the alert contains information on the problem encountered. Please check the associated event details and any other events that happened around the time of this failure to diagnose the problem.
To fix access issues, Client Monitoring Action Account's Run As account needs to be added to the AEMAgent group, given access to the database and also needs to be given access to the URL for listening to Vista error reports.
For the first part, execute 'AEM: Fix Permissions' task associated with Crash Listener entity on this Management Server. For the second part, use httpcfg.exe (http://msdn2.microsoft.com/en-us/library/aa364478.aspx) for configuration (like, httpcfg.exe set urlacl /u http://+:[portNumber]/ /a D:(A;;GX;;;[SID]) and GetSid.exe (http://support.microsoft.com/?kbid=926027) to get SID for the Client Monitoring Action Account.
Once these issues are fixed, either restart the System Center Management Health Service or re-enable Client Monitoring for this management server.