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

High load CPU since licence maintenance are expired



Can you explain to me why, at the moment the maintenance license has expired, all of a sudden, prtg.exe is put to use all the resources CPU when he had never done it before with the same quantity of sensor?

cpu expired licence

Created on Jul 4, 2019 6:03:01 PM

1 Reply



This doesn't have anything to do with the license being expired. We're currently seeing that very issue with a bunch of Windows updates being installed, namely the following:

  • KB4494440
  • KB4495590
  • KB4505052
  • KB4499177

Are either of them installed on your PRTG Server or a Remote Probe? If so, uninstalling should reduce the CPU load after a restart.

PRTGapi | Feature Requests | SNMP Issues

Kind regards,
Stephan Linke, Tech Support Team

Created on Jul 5, 2019 7:46:44 PM by  Stephan Linke [Paessler Support]

Last change on Jul 5, 2019 7:47:10 PM by  Stephan Linke [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.