Moved to ePO for better support - Moderator
This would appear as though the ePO server cannot resolve the DNS name for the endpoint.
Are your ePO server and endpoint in the same DNS Zone. A quick test would be to do an nslookup from the ePO server for the host name of the endpoint.
I have also found that a client task configured for the end point to Deploy the point products would be a better way to deploy the software, this way the agent actions the installation from the endpoint which help to deploy software to offline devices.
McAfee Certified Product Specialist - ePO