Group Policy Error: Failed to open the Group Policy Object.

Group Policy Error: Failed to open the Group Policy Object. You may not have appropriate rights. Details: Logon Failure: the target account name is incorrect

Event Log:
The processing of Group Policy failed. Windows attempted to read the file \\***.***.net\sysvol\***.***.net\Policies\{31B2F340-016D-11D2-945F-00C04FB984F9}\gpt.ini from a domain controller and was not successful. Group Policy settings may not be applied until this event is resolved. This issue may be transient and could be caused by one or more of the following:
a) Name Resolution/Network Connectivity to the current domain controller.
b) File Replication Service Latency (a file created on another domain controller has not replicated to the current domain controller).
c) The Distributed File System (DFS) client has been disabled.


If you migrate your domain controller from windows 2003 to windows 2008.And shutdown old server and get the error above.

Cause:
All FSMO roles haven't been transfered yet. Some of roles are still in the old server

Solution:
Transfer all FSMO roles to new DC