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

Probe health down out of the blue



Trying to figure out why a couple days ago the Probe Health is showing 0%, status down, and have this message:

200 % Delay (Interval Delay WMI) is above the error limit of 100 % Delay in Interval Delay WMI. WMI Sensors of this probe cannot be scanned in their specified intervals. Try longer intervals or distribute load over probes.

I have a pretty simple setup and now all disk and SQL checks are not working. Ping checks are fine. Total of 97 sensors and 43 are failing now. What can I do to get this working again?

probe-health prtg wmi-sensors

Created on Feb 21, 2019 9:38:13 PM

1 Reply




It sounds like your WMI credentials have been changed on the AD side. Can you verify the username and password are still good on those hosts?

Benjamin Day
Paessler Support

Created on Feb 23, 2019 3:38:44 AM by  Benjamin Day [Paessler Support] (1,441) 2 1

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.