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Exclude a drive from WMI Free Disk Space



I have Google Drive installed on a PC that is being monitored by PRTG WMI Free Disk Space (Multi Disk) and this seems to be breaking the sensor with their new virtual drive.

"The host's WMI system is returning invalid data: in class Win32_LogicalDisk - g: FreeSpace g: Size To resolve this issue, use Paessler WMI Tester (https://www.paessler.com/tools/wmitester) with the correct query from https://kb.paessler.com/en/topic/8783 to test the accessibility of your WMI counters. (code: PE098)"

I tried to re-add the sensor hoping to only select the disks I want (and to ignore G) however there doesn't seem to be a way to do that (all or just 1 disk). Is there a way to exclude one drive from reporting back to the sensor?

disk prtg wmi

Created on Oct 31, 2021 3:42:51 PM

1 Reply



Hi Paul,

Thank you very much for your contribution.

Unfortunately, it's not possible to exclude single partitions from the WMI Free Disk Space (Multi Disk) Sensor and as the mounted partition works differently not respond to the WMI query in a proper fashion.

If you want to monitor just specific partitions, the SNMP Disk Free Sensor might be a valuable alternative.


Created on Nov 3, 2021 10:57:19 PM by  Sebastian Kniege [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.