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

Could not log in using the specified credentials.




Since updating PRTG to the latest version ( a large number of our network card WMI sensors are reporting the following error:

PC: Could not log in using the specified credentials. Please make sure they are not only valid for the target system, but for the probe system as well. (Performance Counter error 0xB0000004)

Normally with-in 5 minutes this error will go away and the sensors will return to a green state. However it will pop up again at random.

Any ideas why this is happening since updating?

Thanks, David.

credentials networking wmi

Created on Dec 19, 2012 1:14:34 AM

1 Reply




it seems that the performance counters cannot be read reliably by the PRTG sensors, please try choosing "WMI Only" in the "WMI Compatibility Options" for the parent group(s) of the devices on which you experience these issues.

best regards

Created on Dec 19, 2012 10:04:30 AM by  Torsten Lindner [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.