WDS 2012: UEFI Client Network Boot results in error 0x102

pxe-bootuefiwdswindows-server-2012

I've got a WDS 2012 and a DHCP Server 2012 running on the same subnet, but on different boxes.
I have been deploying Windows 8.1 x64 without any issues to BIOS clients, using DHCP Options 66 and 67.

Now I am trying to deploy Windows 8.1 x64 to HP Computers with UEFI.

In order to be able to boot my UEFI-Client from LAN I changed DHCP Option 67 bootfile name to boot\x64\wdsmgfw.efi.

When the UEFI Client tries to boot from LAN, it successfully loads wdsmgfw.efi, but then it keeps on "Contacting Server (IP-Address of WDS)" for some minutes and then stops with this message:

Windows Deployment Services encountered an error:
Error Code: 0x102

I guess I am missing something here, but I don't know what it is.
DHCP Option 60 does not seem to be an option, because dhcp and wds are on dedicated servers.

As soon as I switch back to BIOS and wdsnbp.com everything works again.

Best Answer

Removed dhcp options 66 and 67 and added ip helper address pointing to wds. additionally had to disable netbios over tcp/ip on the wds server.