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WMI Sensors error, PRTG 7 upgrade to PRTG 8



question 1:

We are having problems with the WMI sensors, on most of the servers in the domain. We have cheked the tcp port 135, in the firewall, and it is open for traffic. We have been looking for troubleshoohing in the prtg faq, and knowledge base, without finding any solution. When we try to add a new wmi sensor for a server, the error report is this:

"Connection could not be established (80070005: Access is denied - Host:, User: svc_prtg, Password: ******, Domain: NTLMDOMAIN:user.stoh.no)"

and this on some servers.

"Connection could not be established (800706BA: The RPC server is unavailable - Host:, User: svc_prtg, Password: ******, Domain: NTLMDOMAIN:user.stoh.no)"

The user svc_prtg is member og Domain Admins.

we are using the version 7 of prtg.

question 2:

when upgrading to prtg 8, are we loosing some settings from the version 7?

Best Regards


prtg prtg8 wmi

Created on Oct 14, 2010 8:06:22 AM

Last change on Oct 14, 2010 11:57:50 AM by  Daniel Zobel [Product Manager]

1 Reply




for the Errors on the WMI Sensors, we can only refer to our WMI Troubleshooting articles, which it seems you read already. Did you try a scan with the WMI Tester already?

When upgrading to PRTG 8 from PRTG 7 you will not lose any settings.

Best Regards.

Created on Oct 14, 2010 1:50:22 PM by  Torsten Lindner [Paessler Support]

Last change on Oct 15, 2010 12:54:36 PM by  Daniel Zobel [Product Manager]

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.