While setting up several new servers and installing NSCLIENT, I ran into the following error message:

could not fetch information from server



Well, that could definitely be a problem. My fault this time was in editing the NSC.ini after installation. The allowed_hosts line of:

allowed_hosts=172.30.0.0/24


ns client++ log window says
Error: ./NSclientlistener unothorized access from 172.30.0.72


how can i solve this problem?

Did you stop and restart the service on Windows after modifying nsc.ini?

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I also got same error

troubleshotting done

(1) check NagiOS server IP address in nsclient file
(2) allow port no. 12489 & 5666
(3) disable firewall
(4) allow port no. using command
netsh advfirewall firewall add rule name="Open NagiOS Monitor Tool Port 12489" dir=in action=allow protocol=TCP localport=12489

netsh advfirewall firewall add rule name="Open NagiOS Monitor Tool Port 5666" dir=in action=allow protocol=TCP localport=5666

(5) configure NagiOS check command to check via port no 12489

but still not working Plz help me

Rather than replying to a 5 year old post you create a new one as it will get higher visibility.