I am receiving the error message PXE-E55: ProxyDHCP service did not reply to request on port 4011 when I attempt to PXE boot to Windows Deployment Services.
WDS is deployed on a server with WSUS and McAfee ePolicy Orchestrator. WDS was originally installed by Windows 2003 Server Service Pack 2 a couple of months ago and has been running fine until a week or so ago.
DHCP is deployed on a separate server in this environment.
The error is intermittent, and only appears to be affecting laptops (HP compaq nx9010 in this instance). The HP desktops are PXE booting okay.