Symptoms
The Microsoft Operations Manager (MOM) OnePointService stop working because there is an access violation in the Performance Manager (PerfMgr) thread on MOM agents. The service attempts to restart but it may or may not succeed. The following two events are typically logged in the Application event log if you experience this problem:

Event ID: 9015Event Type: ErrorEvent Source: OnePoint OperationsDescription:The Microsoft Operations Manager 2000 service (OnePointService.exe) received an unexpected exception. Thread Name: PerfMgr Exception code: 0xc0000005 Exception description: Access Violation Exception address: 77DF7D88

Event ID: 9014Event Type: ErrorEvent Source: OnePoint OperationsUser:NT AUTHORITY\SYSTEMDescription:The Microsoft Operations Manager 2000 service (OnePointService.exe) terminated due to an unhandled exception.It will attempt to restart itself.If the “Thread Name”, “Exception code”, and the “Exception address” match these errors, you are most likely affected by this issue. Also, the OnePointService log file may log entries that are similar to the following entries:

“12015“`0`3044`39`1`PerfMgr`PerformanceManager::execute`236775672`29425836“Event logging is disabled (this is normal for GUIs).Suppressed logging of event 9015(Error) args = “0xbe4″ “0×00000000c0000005″ “Access Violation” “77DF7D88″ “0×0″ “PerfMgr” “12016“`0`3044`39`1`PerfMgr`PerformanceManager::execute`236775672`29425836“Event logging is disabled (this is normal for GUIs).Suppressed logging of event 9014(Error) args = “12017“`0`3044`39`0`PerfMgr`PerformanceManager::execute`236931925`29425836“}PerformanceManager::execute: exiting.“12018“`0`3044`39`0`PerfMgr“239275720`29425836“VERIFY FAILURE:T:\Dev\EEM\V3\Ship\Providers\PerfProvider\PerformanceManager.cpp(51): Destroying mutex locked at this location!After you receive these errors, the OnePointService service may appear to be running when it stops responding (hangs). To recover from this, you must restart the computer.
Resolution
This problem occurs because there is a timeout issue when the PerfMgr thread requests performance data from the computer.