Tuesday, January 14, 2014

2008 DC Status Unavailable when changing directory servers

Problem:

Hello, while upgrading our Active Directory infrastructure to Server 2008 R2 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 shows one of my W2K8 DC's status as being "Unavailable", 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.



Resolved:

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 by enabling the following. NOTE: Always backup your registry in case something goes wrong! If you feel comfortable enough that you are capable, then go for it, otherwise let a good SysAdmin do the work!

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\TCPIP6\Parameters

REG_DWORD: DisabledComponents, 0xFFFFFFFF (4294967295)

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