After adding another DC to our forest (which is hosted at another site) I started getting this error:
DNS was successfully queried for the service location (SRV) resource record used to locate a domain controller for domain “xxx”:

The query was for the SRV record for _ldap._tcp.dc._msdcs.xxx

The following domain controllers were identified by the query:
win-hduo8q0n3ic.xxx

However no domain controllers could be contacted.

Common causes of this error include:

– Host (A) or (AAAA) records that map the names of the domain controllers to their IP addresses are missing or contain incorrect addresses.

– Domain controllers registered in DNS are not connected to the network or are not running.

To fix it:

Chane the registry HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Netlogon\Parameters\SysvolReady from 0 to 1

I also need to mention that the site-to-site VPN was down which was also causing replication to fail, but the steps above also seemed to be a part of the overall solution.

Reference:
http://social.technet.microsoft.com/Forums/windowsserver/en-US/0832a123-f65e-4f8a-8e7a-077892989354/an-ad-dc-for-the-domain-xxx-could-not-be-contacted-why?forum=winserverDS

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3 thoughts on “MS: An AD DC for the domain xxx could not be contacted

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