Turned out to have a server computer 2003 is Pc1 is a domain controller,

Recently opened a 2003 server to take over the original business, but the original server do not intend to become invalid, so the new server up to domain members joined,

Was later found in configuration for the domain, then promoted to additional domain controller,

Here's the thing, the new additional domain controller has been an error 1684. In the original domain above changed the user's password, synchronization is less than the following additional domain controller,


Now the network is connected, DNS is using the domain controller itself as DNS,,


Pray god help analysis the reason and solution