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  • _msdcs folder

    Hello All

    In a fit of utter mindless stupidity at the end of a 12 hour shift I accidentally deleted the _msdcs.domain.local folder in the DNS. Everything seems to be working okay. We have two DCs in one site and it vanished from both simultaneously. Is there anyway of recreating it? If not, will I miss it? I have no backups or anything sensible like that. All I have left is the domain.local zone.
    The only erro message that I have (apert from the one that tempted me into the deletion, we will come back to that !!!) is as follows:

    The dynamic registration of the DNS record '_ldap._tcp.gc._msdcs.domain.local. 600 IN SRV 0 100 3268 R2-DC1.bunker.local.' failed on the following DNS server:
    DNS server IP address: 10.100.101.150
    Returned Response Code (RCODE): 9
    Returned Status Code: 9009
    For computers and users to locate this domain controller, this record must be registered in DNS.
    USER ACTION
    Determine what might have caused this failure, resolve the problem, and initiate registration of the DNS records by the domain controller. To determine what might have caused this failure, run DCDiag.exe. You can find this program on the Windows Server 2003 installation CD in Support\Tools\support.cab. To learn more about DCDiag.exe, see Help and Support Center. To initiate registration of the DNS records by this domain controller, run 'nltest.exe /dsregdns' from the command prompt on the domain controller or restart Net Logon service. Nltest.exe is available in the Microsoft Windows Server Resource Kit CD.
    Or, you can manually add this record to DNS, but it is not recommended.
    ADDITIONAL DATA
    Error Value: DNS server not authoritative for zone.

    Please help!

    Many thanks, in advance

    Sub

  • #2
    Re: _msdcs folder

    Try running on one of your DCs the Following command and see if it helps.
    nltest /dsregdns:DomainController.domain.com

    if this doesn't help try and rebooting one of your DCs, I think _msdcs, would be recreated.
    Last edited by Akila; 23rd October 2008, 20:28.

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    • #3
      Re: _msdcs folder

      Point all DCs to a central DNS server
      Recreate _msdcs zone
      Restart netlogon on all DCs
      After a couple hours restore DNS changes made from step 1

      Comment


      • #4
        Re: _msdcs folder

        I pretty sure it will be restored with a netdiag /fix.
        However you should run this on every dc/gc.
        Marcel
        Technical Consultant
        Netherlands
        http://www.phetios.com
        http://blog.nessus.nl

        MCITP(EA, SA), MCSA/E 2003:Security, CCNA, SNAF, DCUCI, CCSA/E/E+ (R60), VCP4/5, NCDA, NCIE - SAN, NCIE - BR, EMCPE
        "No matter how secure, there is always the human factor."

        "Enjoy life today, tomorrow may never come."
        "If you're going through hell, keep going. ~Winston Churchill"

        Comment


        • #5
          Re: _msdcs folder

          It's an Interesting Scenario, I would test this in my LAB and see how to recover from this one not using Backup/Restore Method.
          I'll let you know on the results on Sunday.

          in the mean time I found those
          http://support.menandmice.com/jforum/posts/list/63.page

          The DNS entries for a Domain Controller can be found in

          %SYSTEMROOT%\System32\Config\netlogon.dns

          including the entries under the "_msdcs" subdomain.

          The Active Directory Domain Controllers will automatically re-register all missing DNS records under "_msdcs" every 60 minutes. Also, restarting on the "logon" service (or a reboot of a DC) will trigger this re-registration.

          So if you create a new, empty, dynamic "_msdcs" Zone, it will be filled by dynamic DNS updates from the Active Directory.
          Last edited by Akila; 24th October 2008, 00:40.

          Comment


          • #6
            Re: _msdcs folder

            Sometimes I think my posts are invisible.

            Comment


            • #7
              Re: _msdcs folder

              Originally posted by Garen View Post
              Sometimes I think my posts are invisible.
              Sorry, did not mean to step in your Post/place.
              I was just so into this case that I was excited, so I posted that link without notice your post, basically your words put on differently.

              Comment


              • #8
                Re: _msdcs folder

                Cheers People

                As soon as I am back in the office (I am currently working on eradicating a vicious hook that has worked its way into my golf swing) I will try all of the above ! Fortunately I have not had a call from the girlfriendless database weirdos that use this particular domain so I may have gotten away with it..

                I will keep you all posted.

                many thanks

                Sub

                Comment


                • #9
                  Re: _msdcs folder

                  Originally posted by Subedei View Post
                  I am currently working on eradicating a vicious hook that has worked its way into my golf swing
                  It's a hard life at the coalface isn't it

                  Originally posted by Subedei View Post
                  girlfriendless database weirdos
                  I'm sure you've just described half of the geeks I know...
                  Gareth Howells

                  BSc (Hons), MBCS, MCP, MCDST, ICCE

                  Any advice is given in good faith and without warranty.

                  Please give reputation points if somebody has helped you.

                  "For by now I could have stretched out my hand and struck you and your people with a plague that would have wiped you off the Earth." (Exodus 9:15) - I could kill you with my thumb.

                  "Everything that lives and moves will be food for you." (Genesis 9:3) - For every animal you don't eat, I'm going to eat three.

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                  • #10
                    Re: _msdcs folder

                    If you get your hook straightened out, post the steps here right away as I'm facing the same problem. I've tried reinstalling but it's been no help. LOL.

                    Comment


                    • #11
                      Re: _msdcs folder

                      I don't know if this link has come up, but it looks as if it could be helpful:
                      http://www.pcreview.co.uk/forums/thread-1470619.php
                      Tom Jones
                      MCT, MCSE (2000:Security & 2003), MCSA:Security & Messaging, MCDBA, MCDST, MCITP(EA, EMA, SA, EDA, ES, CS), MCTS, MCP, Sec+
                      PhD, MSc, FIAP, MIITT
                      IT Trainer / Consultant
                      Ossian Ltd
                      Scotland

                      ** Remember to give credit where credit is due and leave reputation points where appropriate **

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                      • #12
                        Re: _msdcs folder

                        Originally posted by joeqwerty View Post
                        If you get your hook straightened out, post the steps here right away as I'm facing the same problem. I've tried reinstalling but it's been no help. LOL.
                        First up, the important bit....I cured my hook by moving my elbow out slightly on the back swing.... required reboot !

                        As for my folder issue, all sorted !!
                        I tried the netdiag/fix netlogon thing which reinstated it. only prob that put it in the main folder and not on it's own. I then tried Garen's solution of making the foolder which did the trick

                        Many thanks all !

                        Regards Sub

                        Comment


                        • #13
                          Re: _msdcs folder

                          Originally posted by Dumber View Post
                          I pretty sure it will be restored with a netdiag /fix.
                          However you should run this on every dc/gc.
                          3x Thank You!
                          Only Your Suggestion works in my case.

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