What is this?

This knowledgebase contains questions and answers about PRTG Network Monitor and network monitoring in general.

Learn more

PRTG Network Monitor

Intuitive to Use. Easy to manage.
More than 500,000 users rely on Paessler PRTG every day. Find out how you can reduce cost, increase QoS and ease planning, as well.

Free Download

Top Tags

View all Tags

WMI Pagefile Usage Sensor not working



I have a Windows 2008 Server currently monitored via PRTG using mostly WMI sensors. All sensors are fine except the Pagefile Usage sensor. See below:


I have followed the first suggestion found here: https://kb.paessler.com/en/topic/35963-80041010:-the-specified-class-is-not-valid without any success. The second is a bit harder follow as there is no specific service associated with the pagefile WMI that I can think of in order to check the registry.

pagefile-usage prtg wmi

Created on Jul 11, 2018 1:25:14 PM

1 Reply



Hi there,

Thank you very much for your contact.

Please provide us with a Support Bundle directly from your PRTG Core Server instance including the system log files for analysis. This can be done via the "Contact Support" ribbon in the lower right corner of the PRTG web interface.
Alternatively, contact us directly via email to [email protected] because we need to analyze this issue further.

Best regards,

Created on Jul 12, 2018 7:57:04 AM 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.