Users not able to log in during DC power off RRS feed

  • Question

  • I've got a network with two 2008 Standard R2 servers acting as domain controllers.

    DC1 is the Primary controller with all FSMO roles
    DC2 is the 'backup' controller.

    Both controllers are Global Catalogue servers and run DNS services as well.

    Users have DC1 as a primary DNS and DC2 as a secondary DNS.

    When DC1 is down, users are able to log on to their workstations without a problem (DC2 obviously takes over the login process).  However, while DC1 was powered off, we tried logging on
    to a workstation using an account never before used to log onto that workstation and the logon process failed for some reason.

    We were not able to log onto any workstation with user accounts that have never before used to log on to the workstations.

    Can someone explain if this is a normal behaviour ? I assume since the backup DC is running, we should be able to log into any workstation, using any account...

    Is there any quick way I can check where users are authenticating (which dc) when logging into the domain ?

    Thank you for your help!

    Saturday, February 6, 2010 3:12 PM