I have similar situation with my ePO 4 and HIP 3.0.11.
1) The majority of XP workstation reported to ePO server after agent installation.
2) Only few Windows 2003 servers reported to ePO server after agent successful installation.
For those machines not reporting, agent is installed, services started. The execution of CMDAGENT /s and "Collect and Send Prop" succeeded (meaning no red lines) and a message "Agent Service is now Running" is in Green.
Wakeup execution from ePO server resulted in "Wakeup Agent Failed" with additional messages like "Unexpected HTTP response error code 500" or Waking up agent "machine name" using NetBIOS. Please refer to attachment for more details.
Thanks a million in advances.
Failed-to-Wakeup_Agent.doc 120.5 K
Correction to my original post.
My ePO server has HIPS 7x, not HIP 3.0.11.