Good afternoon, I'm trying to register a SLED11SP1 desktop with my ZCM11.2 Primary server, please see the below for the actual error message.

zac reg -g (have also tried with zac reg

Processing Command: reg

user name:administrator

password: **********
Unable to register with the server at:

Unknown or an internal error occurred.

Error processing the ZAC command

I have tried both the DNS record, and the IP address same results. Any ideas?