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Question : Workstations are still remembering the old DNS servers!
All of our workstations were set with static IP's until last friday. We had install new 2008 servers and moved our DNS from the 2003 server to the new 2008 server on Friday. Knowing that this would have to be changed on each workstation, we changed all of the machines to use DHCP on Thursday night. The problem is the machines are periodically losing their connection to the world. Not all of them are doing this and some are more trouble than others.
When we do ipconfig /all on the machine it shows the old DNS servers. If you go the GUI way and look at the TCP/IP properties both the IP address settings and the DNS section is set to use DHCP. Our Router has the correct Client DNS settings; that is verified by doing ipconfig /renew on the machine because this fixes the problem. Doing ipconfig /all again shows the proper DNS servers.
Where are the workstations getting the old IP addresses for the DNS servers?
Answer : Workstations are still remembering the old DNS servers!
Group Policy? It's possible to set them there.
Otherwise, check the Alternate Configuration on the computer, or search the registry for any reference to them.
Chris
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