Hello,
my client is during merge and has configuration:
AD Forest A ( local ) with local users ( not migrated yet )
AD Forest B ( remote ) with local computers ( every PC was installed from scratch from image and belongs to Forest B )
There is a two-way trust between Forest A and Forest B ( checked and is OK ).
Forest A and Domain A ( only one domain ) are on level 2003.
There are two DCs:
DC1 with Windows 2003 SP2 English
DC2 with Windows 2008 R2 SP1 Polish.
User ( from A ) can login on a computer ( from B ) and when logon request is processed by:
DC1: everything is OK: Outlook is connected to local Exchange 2003, drives to local resource are mapped etc.
DC2: access to local resource is denied: Outlook is offline, drive are not mapped etc.
[ I can check logon server by "set logon" command in command prompt. ]
This situation occurred a few days ago; previously everything worked OK.
Recently both controllers were updated by Windows Update.
I' haven't seen nothing special in event logs on DC1 / DC2 or on local computers [ I have no access to B ];
perhaps I've missed something.
Today to mitigate problem, I've raised priority of DC2 in DNS SRV records according with:
https://technet.microsoft.com/en-us/library/cc787370%28v=ws.10%29.aspx
"changing the priority causes DNS to stop referring all clients to this domain controller unless all domain controllers with a lower priority setting are unavailable."
What is wrong ?
best regards
Janusz Such