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New Channel shows up on Sensors Suddenly



Dear Support,

There are some WMI sensors in our deployments (such as Windows CPU Load and WMI Free Disk Space) which at sometimes, have channels added to the sensor. As an example: a 1 CPU core target could suddenly display having 2 CPU cores (one more channel added). Re-adding the sensors could solve the issue but we are not satisfied as the historical data is scattered in different sensors.

Any hints causing such an issue? We are using PRTG Network Monitor x64


channel sensor wmi

Created on Jun 3, 2014 8:55:35 AM

3 Replies



Dear user

Some WMI requests get false data. PRTG does show what the request returns. This sometimes can result in having a fake CPU shown in the WMI sensor.

It is not possible to delete channels, but it is possible to hide unwanted channels: Please go to the sensor overview tab, hover the mouse over a channel and left click. This opens the channel configuration dialogue. Please check "Hide from Charts" and "Hide from Tables" and save.

The channel list below the channel floorplan still shows hidden channels.

Created on Jun 4, 2014 2:47:44 PM by  Arne Seifert [Paessler Support]



Thanks for the reply

Would there be any method or procedure to be done to reduce the chance of false data coming from Windows?

Created on Jun 9, 2014 5:23:57 AM



Dear user

Please have a look at our list of most common WMI errors: https://kb.paessler.com/en/topic/1073 and more to the point, our WMI repair list: https://kb.paessler.com/en/topic/3713

Created on Jun 9, 2014 9:02:33 AM by  Arne Seifert [Paessler Support]

Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.