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 issues after upgrade to



After upograding we have issues with several WMI sensors (timeouts, access denied, other connection issues). Could this be related to the upgrade in any way?

connection upgrade wmi-sensors

Created on Jan 24, 2018 8:48:50 AM

1 Reply



Dear Ruud,

after updating, WMI performance should only get better, because we improved many parts of our WMI connection handling. Regarding these issues, please contact [email protected] including screenshots of one of the non-working WMI sensors:

  • of the sensor overview tab
  • sensor logs tab
  • sensor settings tab (perhaps multiple screenshots are required to include all options)

Please attach screenshots as files to that email. It can be the case that we then ask for more screenshots or log files, but this would be a good starting point.

Created on Jan 24, 2018 4:35:33 PM 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.