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Event ID: 1018 Source: Perflib

Source
Level
Description
Performance counter data collection from the "PerfOS" service has been disabled for this session due to one or more errors generated by the performance counter library for that service. The error(s) that forced this action have been written to the application event log.
Comments
 
See the link to "Citrix Forums - Perflib Event 1022 and 1018" for information on this event.
This problem can appear if a performance extension DLL becomes disabled unexpectedly. Try to re-enable the extension DLL to fix the problem. Information on how to do this can be found in ME248993.

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