Ok, Weird one here! I have a single domain in AD Win2k3 serving a small network. All WinXp clients. Server: 192.168.1.10 Router: 192.168.1.254 (dsl router) Workstations are assigned IP via DHCP on Server (Router has been verified not serving dhcp) DHCP has only two options set (both in Scope and server options, (I know not necessary, but did it to test theory) settings are Router 1.254 and DNS 1.10 Everything works GREAT..... except. My workstation (and others I have found randomly) nearly all decide they don't like the DNS server address dished out by the DHCP Server and change it to 1.254! When I notice this on my machine (mainly because AD tools stop working). I /release /renew and I have the correct DNS server setting again, and all is fine until it changes again.... DNS Server has a forwarder set to DNS to ISP's DNS server. No where can I find the reason why the workstation is changing the DNS only setting to the router. This can happen several times a day. When I release/renew, it works fine again for a while.. Win2k3 has all latest upgrades and sps.. New server, all updates were put on before any configuration was done. Any Ideas? Thanks in advance. Jay MCSE NT4-2000, A,and my wife says I am good too... on the computer only though.

by router you mean gateway right? you should exclude .254 from the scope if you shutdown the server do pcs get a ip address? this isp dns server is listed in the forwarders tab not the forward lookup zone correct? Imagine the power if you knew how to internet search

Wanderer - -=>by router you mean gateway right? No, I mean Router, at least being totaly correct, option 002 in DHCP Settings (192.168.1.254 is the Router, even though the most common term people use is Default Gateway). -=> u should exclude .254 from the scope .254 is not in my address pool, it's just used in the settings of both the Scope and server options as the Router. -=>if you shutdown the server do pcs get a ip address? No. This was one of the first things I checked. -=>this isp dns server is listed in the forwarders tab not the forward lookup zone correct? Of course! ********************* Anybody else????????? Jay MCSE NT4-2000, A,and my wife says I am good too... on the computer only though.