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IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:
(https://support.microsoft.com/kb/256986/EN-US/ )Description of the Microsoft Windows Registry
When you try to add users or global groups from a trusted Windows NT 4.0 domain with Active Directory Users and Computers on a Windows 2000 domain controller, the following error occurs when you click the trusted domain name in the Look In box of the object picker:
If you are doing a NLtest SC_QUERY, you may receive either or all of the following error messages:
Cannot display objects from this location because of the following error:
The trust relationship between the primary domain and the trusted domain failed.
The domain name domain cannot be contacted.
This problem occurs because the RestrictAnonymous value is set to level 2 on the Windows 2000 domain controller.
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
To resolve this problem, set the RestrictAnonymous value to 0 or 1 on the Windows 2000 domain controller:
This problem only occurs in an environment where there is a two-way trust between a Windows NT 4.0 and Windows 2000 domain. You should only use the level 2 setting for RestrictAnonymous in a pure Windows 2000 environment.
For more information about RestrictAnonymous in Windows 2000, click the following article number to view the article in the Microsoft Knowledge Base:
(https://support.microsoft.com/kb/246261/ )How to Use the RestrictAnonymous Registry Value in Windows 2000