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  • Tidying up AD

    I have an old PC I need to format, I also plan on changing the name of the box after its been formatted.

    Does AD link computers through MAC address or will it just be the sid?

    Basically if I remove the pc and try to re-add it with a different name will it upset things?

  • #2
    Re: Tidying up AD

    The computer account is SID based, not MAC based. Just delete the old computer account from the domain and you'll be fine. Also, check DHCP, DNS, and WINS for any references to the old computer and delete those as well.

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    • #3
      Re: Tidying up AD

      Cool, thanks

      Iíve done the DNS & DHCP but cant find the WINS. I donít think we have a WINS server setup. would it be listed on Administrative Tools folder if we had WINS enabled?

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      • #4
        Re: Tidying up AD

        It would, so if you don't see it you're probably not using it.

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        • #5
          Re: Tidying up AD

          Ive just pingged the machine name and its given me back an IP, how would I remove this?


          All Ive done is deleted the machine form DNS, its wasnt in the DHCP.

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          • #6
            Re: Tidying up AD

            Sometimes it'll be cached in your local DNS cache

            ipconfig -flushdns

            or

            net stop dnscache && net start dnscache

            or reboot
            GoogleFu is strong with this one ^

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            • #7
              Re: Tidying up AD

              Would this just be on the DC that looks after DNS or on all DC's?
              Last edited by Deland01; 2nd October 2009, 13:00.

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              • #8
                Re: Tidying up AD

                Scrap that last one, its only on eth DNS server.

                This is wat I see if I ping the old box which was called MARKCOLEMAN

                C:\Documents and Settings\administrator.CCM-CA>ping markcoleman

                Pinging markcoleman.ccm-ca.local [192.168.0.145] with 32 bytes of data:

                Reply from 192.168.0.145: bytes=32 time=2ms TTL=128
                Reply from 192.168.0.145: bytes=32 time<1ms TTL=128
                Reply from 192.168.0.145: bytes=32 time<1ms TTL=128
                Reply from 192.168.0.145: bytes=32 time<1ms TTL=128

                Ping statistics for 192.168.0.145:
                Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
                Approximate round trip times in milli-seconds:
                Minimum = 0ms, Maximum = 2ms, Average = 0ms

                C:\Documents and Settings\administrator.CCM-CA>

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                • #9
                  Re: Tidying up AD

                  Mark Coleman as in the MMA fighter?

                  At any rate, you should flush the DNS cache on the DNS servers.

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                  • #10
                    Re: Tidying up AD


                    Flushed the cache on the DNS server but it still knows what markcoleman is. Surely its wouldnít know what this was any more?

                    I cant understand it

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                    • #11
                      Re: Tidying up AD

                      Go into your DNS on that DC and delete all remains of markcoleman

                      try this

                      ipconfig -flushdns
                      net stop dns && net start dns
                      GoogleFu is strong with this one ^

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                      • #12
                        Re: Tidying up AD

                        this is what I did. Ive just done it again and I can still resolve MARKCOLEMAN when I ping it

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                        • #13
                          Re: Tidying up AD

                          did you happen to put it in the host file for some reason?
                          GoogleFu is strong with this one ^

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                          • #14
                            Re: Tidying up AD

                            The host file is empty apart from the 2 example hosts

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                            • #15
                              Re: Tidying up AD

                              I should have been more specific, flush the DNS server cache and the DNS client cache on the DNS servers. To clear the server cache go to the DNS mmc console, right click the server and select clear cache from the pop up menu. Then from a command prompt on the DNS server type: ipconfig /flushdns.

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