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Home > Success Center > Network Performance Monitor (NPM) > WMI polling not returning CPU on Server 2003

WMI polling not returning CPU on Server 2003

Created by Richard Casey, last modified by MindTouch on Jun 23, 2016

Views: 16 Votes: 0 Revisions: 3


WMI polling is working on most servers except for some of the Windows 2003 servers. In the Dataprocessor_core.cpuMemory.wmi logs, the following message is seen:

Error 'Invalid Class'


NPM 11.5


NPM uses a number of queries to obtain this data. On some older servers, if the CPU data is not returned on the first WMI query, then NPM does not step to the next Query. 


 Upgrade to NPM 11.5.3 or later.

Last modified
00:06, 23 Jun 2016