You could possibly run through the check-list for these 2 systems for the requirement to push the agent:
Admin$ share should be enabled
Server Service should be enabled
File and Print Sharing should be enabled
Remote Registry service is enabled.
If you are able to resolve the names correctly from the ePO server, try authenticating with the credentials used to push the agent and open the admin$ share. The push will try to copy the FramePkg.exe to the admin$ share. Try copying it manually to the admin$ share for each of them and check if that works.
Refer to KB60351 for more details.
Thank you so much! That checklist did the trick. Seems I was missing the admin$ share. Once I got that correctly recreated the ePO Agent applied immediately.
Glad that helped