28r2 fix

run regedit

go to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Servic es\WDSServer\Parameters

Right-click UdpPortPolicy, and then click Modify.
In the Value data box, type 0, and then click OK.
On the File menu, click Exit to exit Registry Editor.
Restart the Windows Deployment Services service.

2008 r1

Click Start Collapse this imageExpand this image, click Administrative Tools, and then click Windows Deployment Services. If there is no server that is listed under the Servers node, right-click the Servers node, and then click Add Server to add the local computer.
In the navigation pane of the Windows Deployment Services MMC snap-in, expand the list of servers.
Right-click the server for Windows Deployment Services, and then click Properties.
Under Network, increase the UDP Port range. For example, if the current port range is 3,000 ports, increase the port range to 4,000 ports