+ Post New Thread
Results 1 to 8 of 8
Windows Server 2012 Thread, Backup domain controller not allowing stations to logon Server 2012 in Technical; Hi! I think I'm being dumb, I have a test setup of a DC 2012 and then created a second ...
  1. #1
    itdirectorscut's Avatar
    Join Date
    Feb 2012
    Location
    Thanet
    Posts
    13
    Thank Post
    3
    Thanked 0 Times in 0 Posts
    Rep Power
    0

    Question Backup domain controller not allowing stations to logon Server 2012

    Hi!

    I think I'm being dumb, I have a test setup of a DC 2012 and then created a second server (2012) and promoted it to become a replica domain controller (AD, DNS and DHCP) HOWEVER if I switch off the PDC workstations are unable to logon (no logon servers available) I have checked and they do get a IP from the SDC, am i missing something obvious??

    Thanks!!

    Steve

  2. #2


    Join Date
    Mar 2009
    Location
    Leeds
    Posts
    6,577
    Thank Post
    228
    Thanked 853 Times in 732 Posts
    Rep Power
    294
    is dhcp dishing out the 2nd dcs ip as a dns server?

  3. #3
    itdirectorscut's Avatar
    Join Date
    Feb 2012
    Location
    Thanet
    Posts
    13
    Thank Post
    3
    Thanked 0 Times in 0 Posts
    Rep Power
    0
    Quote Originally Posted by sted View Post
    is dhcp dishing out the 2nd dcs ip as a dns server?
    Hi, ok after trying a windows 7 host it does logon but take a very long time, is this normal? I was testing it with server 2012 which showed up the 'no logon servers available'!

    thanks!!

  4. #4


    Join Date
    Mar 2009
    Location
    Leeds
    Posts
    6,577
    Thank Post
    228
    Thanked 853 Times in 732 Posts
    Rep Power
    294
    Quote Originally Posted by itdirectorscut View Post
    Hi, ok after trying a windows 7 host it does logon but take a very long time, is this normal? I was testing it with server 2012 which showed up the 'no logon servers available'!

    thanks!!
    have you got verbose turned on so you can see where its hanging? I suspect its stuck trying to do folder redirection or profiles to a non existent server

  5. #5
    RobBaxter's Avatar
    Join Date
    Jun 2011
    Location
    Baldock
    Posts
    93
    Thank Post
    8
    Thanked 21 Times in 15 Posts
    Blog Entries
    1
    Rep Power
    10
    You need to migrate the PDC roll ...

    Currently, the PDC Service Roll acts as a kinda "broker". If the PDC is "down" you can take this role forcibly from any other Server with AD on it.

    So ... in the event of a PDC Master problem, you would take control of this roll to another DC.

    Your 4 main service rolls allways have a "master", most don't require the master to be present, but the PDC does, this is integral to password replication.

    Move your PDC to the 2012 server before you shutdown the old server and it should work. Once you test is over, move it back.

    (at least, that was what i learnt doing my MCITP EA Cert for 2008 r2, it is possible it changed with 2012, just a head up, i very well could be wrong) ... note to self ... refresh my certs
    Last edited by RobBaxter; 16th October 2013 at 07:55 PM.

  6. #6

    FN-GM's Avatar
    Join Date
    Jun 2007
    Location
    UK
    Posts
    15,824
    Thank Post
    875
    Thanked 1,675 Times in 1,458 Posts
    Blog Entries
    12
    Rep Power
    444
    Quote Originally Posted by RobBaxter View Post
    You need to migrate the PDC roll ...

    Currently, the PDC Service Roll acts as a kinda "broker". If the PDC is "down" you can take this role forcibly from any other Server with AD on it.

    So ... in the event of a PDC Master problem, you would take control of this roll to another DC.

    Your 4 main service rolls allways have a "master", most don't require the master to be present, but the PDC does, this is integral to password replication.

    Move your PDC to the 2012 server before you shutdown the old server and it should work. Once you test is over, move it back.

    (at least, that was what i learnt doing my MCITP EA Cert for 2008 r2, it is possible it changed with 2012, just a head up, i very well could be wrong) ... note to self ... refresh my certs

    He is not doing a migration he is testing in the event he looses a DC. In theory things should carry on as normal.

  7. Thanks to FN-GM from:

    RobBaxter (16th October 2013)

  8. #7
    RobBaxter's Avatar
    Join Date
    Jun 2011
    Location
    Baldock
    Posts
    93
    Thank Post
    8
    Thanked 21 Times in 15 Posts
    Blog Entries
    1
    Rep Power
    10
    Damn good point!

    In which case ... most likely... it's GPO references to the server which is off, stalling out the logon as @sted said.

    Sorry if i gave bad advice

  9. #8
    DMcCoy's Avatar
    Join Date
    Oct 2005
    Location
    Isle of Wight
    Posts
    3,424
    Thank Post
    10
    Thanked 488 Times in 428 Posts
    Rep Power
    111
    Is the second DC also a global catalogue?

SHARE:
+ Post New Thread

Similar Threads

  1. Replies: 7
    Last Post: 29th October 2013, 11:13 AM
  2. Domain Controller not reading mapped drive!
    By gloriousglenn in forum Windows Server 2000/2003
    Replies: 28
    Last Post: 18th August 2009, 01:47 PM
  3. Server 2003 not allowing me to hot-swap sata drives.
    By Deaks in forum Windows Server 2000/2003
    Replies: 5
    Last Post: 28th October 2008, 12:55 PM
  4. Replies: 17
    Last Post: 7th November 2007, 01:24 PM
  5. Domain controller not registering as a DC
    By Dos_Box in forum Windows
    Replies: 5
    Last Post: 13th June 2007, 05:17 PM

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •