CMK version:2.4.0.P34 Enterprise OS version: Appliance 1.7.21
After unmark this in “Distributed Monitoring” :
I cannot register the (windows) agent for the Updater function.
Is this so wanted, or is there a “workaround” ?
Error message:
Unexpected answer from Checkmk server, missing json data. Please check that the credentials you entered are correct or use an automation user for the registration
I think you need to change your updater options for the client. I think you use “Registration and fallback” as option. When you disable the interface on a remote site, the updater can not connect. Yu can try to set the updater to “All connections” and set it to your central site.