SBS Essentials, Wds & Client install not working properly

hi guys,

I am having trouble getting workstations to install the sbs connector software after using wds to install win 7. everything goes sweet until the workstation reboots it connects to the server asked for a username and password, it then throws up a error saying that the server is unavailable and to try again later any ideas?

Basically it is a problem with the NIC drivers and if not that, then it can be basically your Firewall, just try and reconfigure the Firewall setting and after doing that just restart once and it should solve your problem.