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Core service will not start



I just applied the update to 18.1.38 from 18.1.37 and the core service will not start. All was fine prior to the update. I do not see any reason in the event viewer. All I see in the log is

Startup: Starting Core Server: PRTG Network Monitor x64 ID: -1000

It does not start.

Any ideas?

core-service error upgrade

Created on Mar 12, 2018 5:24:31 PM

2 Replies



Hello there,

Please download the latest stable version manually from here: https://downloads.paessler.com/prtg/prtg.zip

Disable an eventually existing antivirus temporarily and run the installer then manually. After rebooting PRTG should be coming back up again.

Kind regards,


Created on Mar 12, 2018 7:31:54 PM by  Erhard Mikulik [Paessler Support]



To close this out, I reinstalled the base program and all is well now.

Created on Mar 12, 2018 7:32:53 PM

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.