DC messed up after changing IP address

Posted on 2012-09-08
Last Modified: 2012-09-09

We are building a new DC in a new site.

Unfortunately, it was built with the wrong IP address before it was DCPROMOd. SO I went into Network properties and changed the IP from to (the latter is the correct value).

I then rebooted the server, but now DNS etc is unresponsive on the box. I can't go back into the Network area because it just hangs.

This machine also runs DNS server and I didn't re-configure DNS after changing the IP address.

How can I fix this? Server is Windows 2008 Server
Question by:neil4933

    Author Comment

    FYI the error message is:

    Event ID 408, DNS server could not open socket for address Verify this address is a valid address foe the computer.
    LVL 9

    Expert Comment

    LVL 17

    Accepted Solution

    I saw something like that, we had to demote the server, changed the IP to the correct one, then promoted it again. Putting the machines back was such a pain though; see this as the last resort if the above advice does not work for you.
    LVL 18

    Expert Comment

    have you run ipconfig /flushdns & ipconfig /registerdns also run dcdiag /fix and netdiag /fix

    After everything restart Netlogon service and run dcdiag /test:dns and post the errors here if any

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