When you apply a Windows Management Instrumentation (WMI) filter to a Group Policy object (GPO), you may experience one or both of the following symptoms:
That GPO may not be processed.
All Group Policy processing may stop.
This issue may occur if WMI encounters an error during Group Policy processing and stops responding.
When you apply a WMI filter to filter the scope of a GPO, WMI errors that are encountered during Group Policy processing are handled in the following ways:
When the WMI service is off: If the WMI service is not running, only that GPO to which you have applied the WMI filter is not processed. All other Group Policy processing continues.
When the WMI service is on and a known error occurs: If a known error is encountered, only that GPO to which you have applied the WMI filter is not processed. All other Group Policy processing continues.
Note A known error in this case is an error for which the Group Policy feature has the error code, and for which it monitors.
When the WMI service is on and an unknown error occurs: If an error occurs for which the Group Policy feature does not have an error code and for which it does not monitor, all Group Policy processing stops (fails).
For additional information about WMI filters, visit the following Microsoft Web sites: