This article was previously published under Q272124
When you attempt to add a workstation to a domain, you may not be able to do so, and you may receive the following error message:
A domain controller for your domain could not be contacted. You have been logged on using cached account information. Changes to your profile since you last logged on may not be available.
If caching is disabled, you may also receive this error message:
The system cannot log you on now because the domain (DOMAIN_NAME) is not available.
This behavior can occur when the primary domain controller (PDC) has not correctly registered the 1B (domain master browser) and 1C (domain controller) NetBIOS names in the Windows Internet Name Service (WINS), or when the 1B and 1C entries are not specified correctly in the LMHOSTS file.
To resolve this issue, register the 1B and 1C NetBIOS names in WINS again by stopping and then restarting the Netlogon service on the PDC.
If your network does not use a WINS server and the domain controller is located on a remote network segment, on the workstation, use an LMHOSTS file with the correct 1B and 1C entries for the domain.
For more information about NetBIOS names registered in WINS and about using an LMHOSTS file, refer to the following articles in the Microsoft Knowledge Base:
180094 How to Write an LMHOSTS File for Domain Validation and Other Name Resolution Issues
163409 NetBIOS Suffixes (16th Character of the NetBIOS Name)