I know its been awhile since the last post, so here it goes...
Issue:
This week we are dealing with a specific error that caused multiple agents to throw the alert monitor, System Center Management Health Service Unloaded System Rule(s) with the following description.
The System Center Management Health Service ????????-????-????-????-???????????? running on host <computername> and serving management group with id {????????-????-????-????-????????????} is not healthy. Some system rules failed to load.
This caused the agents to go into a "grey" state. Review the Operations Manager log on an affected agent computer and look for errors with event id 4513 with the following description.
The callback method DeliverDataToModule failed with exception "Could not load file or assembly 'System.Management.Automation, Version=1.0.0.0, Culture=neutral, PublicKeyToken=????????????????' or one of its dependencies. The system cannot find the file specified." in the module Microsoft.EnterpriseManagement.Modules.PowerShell.PowerShellProbeActionModule.
Workflow: Microsoft.IntelligencePacks.Types.HealthServiceProxyConfiguration
The common factor among the affected computer agents was all Windows Server 2003 and Windows Server 2008 (non R2) which were missing Powreshell 2.0.
Solution and workaround:
The solution is to override the Advisor Proxy Setting Rule or install Powershell 2.0.
It was not until after I had called Microsoft Support which were quick to find the cause and provide a solution to this issue, that I found this issue being discussed on the TechNet Forum - Grey Agents after New Management Pack with id:"Microsoft.IntelligencePacks.Types", version:"7.0.9781.0" received. - and the Microsoft Azure forum - Windows Server 2003 'grey' due to missing Powershell system rule Microsoft.IntelligencePacks.Types.HealthServiceProxyConfiguration.