i am trying to install altiris agent it fail?
Have you push it from Server or manually?
Share the altiris client log for find the exact reason?
AeX... logs in the %windir% or %windir%\system32, share it..
See some troubleshoot doc link
How to troubleshoot a failed Altiris Agent push
Installing Altiris client plugins fail with error 1603
Please provide more information without any logs we can't find any root cause
Location of log files
I will check and share you. Will try the attach steps.
stop the window firewall and try again.