PXE-E55: ProxyDHCP service did not reply to request on port 4011

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.
inqudeAsked:
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Netman66Connect With a Mentor Commented:
Is WDS running?  Stop and Start the WDSServer service.

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Netman66Commented:
Do you witness onscreen if they actually get an address?

If not, ensure your switch have PortFast enabled.

Otherwise, make sure Option 60 is set on the DHCP scope or server.

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inqudeAuthor Commented:
Yes, the laptop did pick up an IP address.

I am pretty sure that I can rule out the configuration of the hubs and switches in the LAN environment because this solution has been working happily with RIS for the last couple of years and I have confirmed that no changes have been made at the network level.

I do not have option 60 available in the DHCP server options. I thought option 60 was for solutions where the DHCP was co-resident with the WDS server, but I may well be wrong.

I have tried again today, and I am getting the following error:

PXE-E51: No DHCP or proxyDHCP offers were received.
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inqudeAuthor Commented:
I did try stopping and starting the WDSServer service when the problem originally happened. I can certainly try it again, but I suspect it will not make much difference, the reason being that the HP desktops are working fine - it is just the laptops that appear to be failing.
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Netman66Commented:
Did you try a BIOS update?  I know it sounds weird, but we had some Dells that needed a BIOS flash before PXE worked properly.

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inqudeAuthor Commented:
I might try that when I get in to work on Monday; I'll let you know how I get on.
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inqudeAuthor Commented:
It looks as though, ultimately, it was a combination problem. Restarting the WDS service allowed the laptop to get an IP address but then the build ran incredibly slowly and then hung half way through. I then had a look under the desk and noticed that the laptops were plugged into a hub. I took the hub out of the picture and the laptop built okay.

I have a sneaking feeling that this problem is not completely fixed yet, but fingers crossed. Thanks for your assistance, Netman66 - points well deserved for persistence.
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