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2008 DC Status Unavailable when changing directory server

    Question

  • Hello, while testing/playing with Server 2008, in my two separate test domains. One, a 4 DC native 2008 domain and two, a mixed 2003 R2 / 2008 domain. I noticed whenever I right click on my domain, from one of the roles, and choose change domain controller, and the change Directory Server menu comes up. It also shows my W2K8 DC's status as being Unavailable. My W2K3 DC's all show Online. Why is that? It does not prevent me from managing them or performing any function that i know of. I have the firewall's off thinking it was some kind of SNMP traffic but that didn't change anything.

    Any ideas?

    Thanks

    Friday, June 27, 2008 3:33 PM

Answers

  • Hi KVCCC,
     
    The "Online" status in the dialog box of "Chang Directory Server" means that DC is online to be connected from the other DC. What is the "Unavailable" status means that it doesn't make sense to connect to the DC that we have already logon.
     
    Hope it helps.

    Your potential. Our passion.
    • Marked as answer by David Shen Tuesday, July 08, 2008 2:24 AM
    Wednesday, July 02, 2008 10:15 AM

All replies

  •  I spoke to soon on my pervious post. Not all W2K8 DC show Unavailable, just the DC where i am consoled to.
    Friday, June 27, 2008 3:44 PM
  • Hi KVCCC,
     
    The "Online" status in the dialog box of "Chang Directory Server" means that DC is online to be connected from the other DC. What is the "Unavailable" status means that it doesn't make sense to connect to the DC that we have already logon.
     
    Hope it helps.

    Your potential. Our passion.
    • Marked as answer by David Shen Tuesday, July 08, 2008 2:24 AM
    Wednesday, July 02, 2008 10:15 AM
  • David Shen - MSFT said:

    Hi KVCCC,

     
    The "Online" status in the dialog box of "Chang Directory Server" means that DC is online to be connected from the other DC. What is the "Unavailable" status means that it doesn't make sense to connect to the DC that we have already logon.
     
    Hope it helps.

    Your potential. Our passion.



    Are you sure about that?
    I setup a test enviorment with a 2003 dc, when i promoted a 2008 server, and both shows as online.

    then i added promoted a 2008 dc on my prod enviorment, and that shows as unavailable. as a result, when i transfer fsmo roles i get group policy problems.
    /Michael
    Monday, August 18, 2008 7:53 AM
  • G'day

    I have this same issue MrMVP, have you worked out what this is about? I can still seem to change to that DC from another DC eventhough it says "Unavailable".


    Wednesday, October 08, 2008 2:06 AM
  • Same problem here.
    Monday, December 01, 2008 8:07 PM
  • Hello

    This "status unavailable" can occur if you have disabled the IPv6 bindings on your NICs but not disabled IPv6 components. You can disable IPv6 components by editing the registry, check this out: http://support.microsoft.com/default.aspx/kb/929852. I've seen this in several environments...

    /Ragnar
    • Proposed as answer by cditto Monday, February 15, 2010 9:39 PM
    Sunday, December 28, 2008 10:07 AM
  • I know this is old...but this is the only online link I found regarding this problem...and RagnarNO was right on the money about "IPv6" at least for our environment.

    Thanks!
    Monday, February 15, 2010 9:40 PM
  • I also experienced same issue. I enabled TCPIPv6 and the server status is now Online.

    • Proposed as answer by GigAbove Thursday, May 19, 2011 9:08 PM
    Wednesday, December 15, 2010 3:26 PM
  • I also experienced same issue. I just enabled TCPIPv6 and the server status is now Online.  It won't affect anything to have it on at this point

    Thursday, May 19, 2011 9:09 PM
  • Dear RagnarNO

     

    Your are right ! your solution fixed my problem!

    Thank you.

    • Proposed as answer by darshank Tuesday, September 13, 2011 10:34 AM
    Thursday, July 28, 2011 4:36 AM
  • thnx bro problm solved :)
    Wednesday, November 30, 2011 10:12 AM
  • Thanks for the information. It is over 3 years since RagnarNO gave this solution and it is the only one I could find on the net. Works like a charm.
    Wednesday, March 07, 2012 7:20 PM
  • Dear RagnarNO, thank you for your information. I had the same situation and now it resolved by enabling IPV6.   

    Thursday, April 05, 2012 5:23 PM
  • Thanks RagnarNO, worked a treat. Cheers!!
    Monday, June 04, 2012 8:31 PM
  • Same issue - worked for me!!!
    Tuesday, July 03, 2012 8:12 PM
  • Hello

    This "status unavailable" can occur if you have disabled the IPv6 bindings on your NICs but not disabled IPv6 components. You can disable IPv6 components by editing the registry, check this out: http://support.microsoft.com/default.aspx/kb/929852. I've seen this in several environments...

    /Ragnar

    Yes thats the answer... thanks
    Tuesday, February 12, 2013 12:08 AM
  • Dear RagnarNO,

     

    Your are right, your solution fixed my problem.

    Thank you ...

    Thursday, April 04, 2013 5:37 PM
  • This solution from RegnarNO fixed the "Unavailable" status, but I still not abel to "Chang Directory Server" in ActiveDirectory and the Error "The follwoing Domain Controller could not be contacted. This Interface is Unkonwon" appears.! any sugesstions what the reason could be??


    Husam

    Thursday, June 13, 2013 9:43 AM
  • Hello

    This "status unavailable" can occur if you have disabled the IPv6 bindings on your NICs but not disabled IPv6 components. You can disable IPv6 components by editing the registry, check this out: http://support.microsoft.com/default.aspx/kb/929852. I've seen this in several environments...

    /Ragnar

    This also solved my problem.  Added a 2nd DC on our network running 2008R2 and I disabled IP6.  Enabled it and now it shows online.  I believe it's a way start eventually forcing people to use IP6 for the near future.


    Cesar

    Wednesday, July 17, 2013 6:49 PM
  • Solved it for me ... Thanks you!!!
    Wednesday, September 18, 2013 5:03 PM

  • Thanks buddy its work now. Can any one tell me why it is effected with IPv6 disabling 
    Friday, November 22, 2013 9:59 AM
  • I'll Give you treat man. worked like a charm. Thanks buddy

    Thursday, November 28, 2013 6:47 AM