Service does not start PRTG Core Service

Hello,

thank you very much for your KB-Post!

Can you please try setting the PRTG Webserver to start on Port 80 on localhost/127.0.0.1 with the PRTG Server Admin Tool, and then try starting the Core Service again. Does it then start?

best regards.

May, 2013 - Permalink

I'm having the same issue, and I tried setting the port to 80 on localhost, and still get this error.

I had a previous installation of PRTG which stopped working at some point. I installed latest version, it still doesn't work. Also tried un-installing/re-installing, still no luck.

The only PRTG message in the windows services log file is:

- <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
- <System>
  <Provider Name="PRTG Network Monitor" /> 
  <EventID Qualifiers="0">0</EventID> 
  <Level>4</Level> 
  <Task>0</Task> 
  <Keywords>0x80000000000000</Keywords> 
  <TimeCreated SystemTime="2014-05-01T06:41:14.000000000Z" /> 
  <EventRecordID>1</EventRecordID> 
  <Channel>PRTG Network Monitor</Channel> 
  <Computer>AMUSIUM</Computer> 
  <Security /> 
  </System>
- <EventData>
  <Data>Trying to restart PRTG Core Server Reason: A setting in need of a restart has been changed.</Data> 
  </EventData

Please help!

Dec, 2014 - Permalink

Did you try a full system reboot on the machine?

Dec, 2014 - Permalink

I did a hard boot, still the same issue. I revisited the logs, the message "Trying to restart PRTG Core Server Reason: A setting in need of a restart has been changed." was old.

There are no current messages in the Application and Service logs/PRTG Network Monitor. However, in the general Windows Logs/Application, I see these info entries for PRTG:

-Starting 14.4.12.3509

-Startup: Starting Core Server: PRTG Network Monitor 14.4.12.3509 x64 PRTG Network Monitor Freeware (Trial Expired, 100 Days) ID: -1000

-Core Server will shut down now (running for 1 s since 12/10/2014 2:42:34 PM) ID: -1000

-Could not start webserver: '''' is not a valid integer value ID: -1000

It looks like somehow the port number has gotten scrambled, but using the PRTG Administrator tool to set it to anything doesn't help.

Dec, 2014 - Permalink

The message indicates that there is likely a problem with the configuration file (it may have been corrupted).

Please try to replace your running config file;
C:\ProgramData\Paessler\PRTG Network Monitor\PRTG Configuration.dat

with one from the auto backup folder.
C:\ProgramData\Paessler\PRTG Network Monitor\Configuration Auto-Backups\

Yesterday's config or the one before should work. Please ensure that both services (PRTG Core Server and PRTG Probe) are stopped before overwriting the config file.

Please also take a look at the following KB-Article as it explaining this process:
How do I restore a previous configuration of PRTG from automated backup ZIPs?

Jun, 2015 - Permalink