Service Check Timed Out - on some Windows servers

That’s the weird thing, it works on all other servers without any additional config manually made…
EDIT: Manually doing “check_mk_agent.exe test” does not do anything, even if the service is stopped before that.
I keep editing here to not spam with new messages:
Firewall settings are ok, port open, and configured as in manual
Log: 2021-11-11 08:38:56.287 [srv 5892] perf: In [54150] milliseconds process 'cscri - Pastebin.com