CMK version: 2.1.0p17 OS version: server 2012/2022 Hi we recently started implementing corporate mandated GPOs. It works fine on 99% of the servers but on a few the checkmk stop listening. I tried full clean reinstall and unless I remove the policy it just won’t listen (nothing on 6556 on netstat…

Hi Windows or Linux Server ??? FW in the Network ??? State can checked via NMAP from Monitoring Server root@deksmoni:~# nmap -p6556 10.xx.xx.xx Starting Nmap 7.70 ( https://nmap.org ) at 2023-02-28 09:19 CET Nmap scan report for HOST Host is up (0.00016s latency). PORT STATE SERVICE 6556/tcp…

I wrote windows in the title and OS 2012\2022… It’s not even a network issue, its local on the server. the agent listener is simply not running (server FW is off). Thanks

take a look: [image] Monitoring Windows - The new agent for Windows in detail The Windows agent of Checkmk version 2.1.0 adds the Agent Controller and new features to the agent program. You can learn how to use the agent here. Chapter 5 then check from Moni…

[image] kishke: I wrote windows in the title and OS 2012\2022… Somtimes … its good sometimes its … not so good :wink: … where are my classes ???

Windows agent not listening on 6556

Troubleshooting

BH2005 (Bernd Holzhauer) February 28, 2023, 9:00am 4

take a look:

Chapter 5

then check from Monitoring Server

OMD[mysite]:~$ cmk -d ourHost

Do you have checkmk agent 2.4 sucessful running on win11 24h2 + all updates?