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The wbemtest.exe utility can be used to verify that its possible to make a WMI call to the monitored machine from the KNM host machine. To start the utility, logon to the KNM host machine desktop and open the start menu, in the "Run" field, type the following and press enter:
wbemtest.exe
When the utility has started, click the "Connect" button.
Enter the following address and replace "my_ip" with the IP number of the monitored machine:
\\my_ip\root\cimv2
Enter the username and password that you use in KNM. In the Authority field, enter the domain name of the user. Click "Connect" and then "Enum classes".
In the dialog "Superclass info" , click the recursive radio button and click ok.
The utility now populates the Query result window with information from the monitored machine. If this does not happen, consult the following troubleshooting information on Microsoft support web site.
Problem with data returned from performance counters read by WMI
Sometimes the performance register and WMI can become out of sync or the process that collects performance data for WMI can hang on a locked resource.
As a last resort after rebooting the monitored machine, resync the performance counters to WMI using the steps outlined in this article.