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How do I solve this problem with Socket Error # 10061 Connection refused

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When I use CPU Load sensor, it's show above error. How can I solve it? WMI: Connection could not be established (RPC Server not accessible. Port Error (Socket Error # 10061 Connection refused.)

error sensor wmi-error

Created on Aug 4, 2016 8:51:36 AM by  a23554 (0) 2



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Dear a23554,

If you see this precise error message, the port which all DCOM communication protocols are routed over is blocked. This very likely is the case because the RPC server on the monitored machine is:

  • blocked by a local firewall
  • blocked by domain policies
  • not running
  • running on a different port than specified in PRTG's setting for this computer A possible solution for this could be to add the device name and ip address in the probe host file and to use the ip address in the settings.

Please follow this link for more troubleshooting hints for WMI related issues.

Best, Felix

Created on Aug 4, 2016 11:03:29 AM by  Felix Saure [Paessler Support]



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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.