Domain Controller Offline Too Long

There is a limit to how long a dc can be offline and still be brought back successfully called the tombstone lifetime.

Domain controller offline too long. It is probably 180 days for your forest though so you are nowhere near having to worry about it if the dc was out of commission for just over the weekend. Click yes to confirm within the active directory domain services dialog box. Expand the domain domain controllers.

Cn ntds settings cn dc1 cn servers cn mainsite cn sites cn configuration dc mydomain dc local period of time minutes. This issue is expected behavior when the out of band oob active directory management gateway service component is not installed on a computer that is running windows server 2008 or. After x days varies a bit from ad version the ad controller assumes that other ad controllers that have been down are never coming back.

See the linked technet article on how to determine the tombstone lifetime for the forest. As long as you do not keep the domain controller shut down longer than the days set for the active directory forest s tombstone lifetime you should be safe. But don t allow there to be multiple dhcp servers on the network.

105103 the connection object for this domain controller will be ignored and a new temporary connection will be established to ensure that replication continues. I am concerned about how long can a domain controller be offline before it will start to impact the remainder of the domain or experence difficulties re syncing to the remainder of the domain when power does come back. In next dialog box select this domain controller is permanently offline and can no longer be demoted using the active directory domain services installation wizard dcpromo and click delete.

Only domain controllers that are running windows server 2008 or windows server 2003 are listed as in an offline status. Since the era of windows 7 and windows server 2008 r2 microsoft has added offline domain join to the administrator s tools. We have domain controllers that are located in houston.

Its 60 days if the. The servers will replicate tomestoned accounts to each other and basically take ad offline. This will happen immediately on a dc that has been down more than x days it will assume that all other ad controllers are dead and tombstone them then happily replicate it to the other dcs which will delete their own domain records.