Application Users Monitor

Microsoft.SystemCenter.CM.AEM.Views.Internal.UsersAffectedAppThreshold (AggregateMonitor)

This monitor checks for all number of users' monitors associated with this application.

Knowledge Base article:


This monitor checks for total users experiencing Application Errors for an Application across all Error groups belonging to that application. The number of unique users experiencing Application Errors reported to AEM has exceeded threshold.


The number of errors reported to AEM within the sampling period has exceeded the threshold value for unique computers. This may be caused due to several factors depending on the Application that is crashing.


Additional steps that can be taken to diagnose the problem are as follows:

If transmission of Error reports has been turned on, verify if there is a Microsoft solution available. The solution, if available, can provide additional information to resolve the problem.

Review the Error Events view to obtain link to the cab file from the crash in the Persisted Cabs folder. If this is an old Error report, the cab file may have been groomed out.

For those applications that may not get a Microsoft Solution URL response, the crash information would be required by Application support or Application development team

A recent Service Pack or Quick Fix (QFE) that has been applied to AEM Managed computers could lead to a sudden rise in number of error across these computers. Please check to see if any such software update

Further diagnosis of this problem requires review of the related Top N Application and Top N Error Groups report to identify the top N Error groups to understand if this is the most critical Error group based on aggregated count.

Element properties:

Parent MonitorSystem.Health.AvailabilityState
Alert GenerateTrue
Alert SeverityError
Alert PriorityHigh
Alert Auto ResolveTrue
Alert Message
Application Users Monitor
The total number of unique users experiencing crashes for this application have exceeded the threshold. The total number of unique users are {0}. The threshold value for the monitor is {1}.

Source Code:

<AggregateMonitor ID="Microsoft.SystemCenter.CM.AEM.Views.Internal.UsersAffectedAppThreshold" Target="AEMLib!Microsoft.SystemCenter.CM.AEM.Application" Accessibility="Public" Enabled="true" ParentMonitorID="Health!System.Health.AvailabilityState" Remotable="true" Priority="Normal">
<AlertSettings AlertMessage="Microsoft.SystemCenter.CM.AEM.Views.Internal.UsersAffectedAppThreshold.AlertMessage">