Hello, I have SCOM 2008 R2 and Windows 2008 R2 agent. The performance data on this agent is not collecting and I see this error in the event log I got this event in SCOM event log Log Name: Operations Manager Source: Health Service Modules Date: 3/14/2011 3:20:57 PM Event ID: 10104 Task Category: None Level: Error Keywords: Classic User: N/A Computer: SRV Description: In PerfDataSource, querying for Global Snapshot failed with error 'More data is available.' In the SCOM environment we have management pack that we develop and maybe one of the counter have a problem. right now we don't know which counter cause that but we don't understand why this cause SCOM to stop collect performance data. There is not problem to open windows performance monitoring tool and see all counters