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Could Not Start PRTG Core Server (Web server)

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For some reason my core server stopped working. When I attempt to start the core service I get a message stating:

Sorry, could not start PRTG Core Server (Web Server) Could not start webserver for http://xxx.xxx.xxx.xxx: Structural error in XML file, 15 open items.

I did find a previous thread that mentioned replacing the PRTG Configuration.DAT file with one from the Auto-Backups folder. However, I tried with two different files and received the same message with the first one and a different error message with the second.

Does anyone have an idea as to why this happened and then how to fix?

open-items prtg-configuration-dat prtg-core-server prtg-core-server--web-server- structural-error xml

Created on Jun 15, 2015 9:02:20 PM by  kemitchell (0) 1



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I just replaced below folder from backup when it was working, and fixed the issue for me.

C:\ProgramData\Paessler

Created on Sep 7, 2015 6:05:42 AM by  rakeshkr_dec (0)



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Rakesh is right, have a look at this:
How do I restore a previous configuration of PRTG from automated backup ZIPs?

Go back as far as necessary with the configuration files. What particular version are you running?

Created on Sep 7, 2015 6:47:24 AM by  Stephan Linke [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.