Connection error on new windows agent

CMK version:
RAW - 2.1.0p11.cre
OS version:
Server 2019

Error message:

This is a fresh agent install on a Windows Server 2019. I’ve went through the setup guide to install the agent, configure the certificate etc. However, when I go to add the host inside of the checkmk GUI I get a Connection error for the checkmk agent. I’ve confirmed there is connectivity between both hosts over the required ports and verified windows firewall has exceptions.

What happens if you try from the monitoring server a “telnet targetip 6556”?

I get a connection refused error.

Was the agent registered on the monitoring server to use TLS?

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