DOCUMENT:Q245172  10-AUG-2001  [winnt]
TITLE   :Err Msg: Could Not Find Domain Controller for This Domain
PRODUCT :Microsoft Windows NT
PROD/VER::2000,4.0
OPER/SYS:
KEYWORDS:

======================================================================
-------------------------------------------------------------------------------
The information in this article applies to:

 - Microsoft Windows NT Server version 4.0 
 - Microsoft Windows 2000 Advanced Server 
 - Microsoft Windows 2000 Datacenter Server 
 - Microsoft Windows 2000 Professional 
 - Microsoft Windows 2000 Server 
-------------------------------------------------------------------------------

SYMPTOMS
========

When you attempt to establish a trust relationship from a trusting domain by
connecting to a primary domain controller (PDC) running Microsoft Windows NT
Server 4.0 in a trusted domain, you may receive the following error message:

   Could not find domain controller for this domain.

CAUSE
=====

This behavior can occur if the 1b (domain master browser) and 1c (domain
controller) NetBIOS names for the PDC in the trusted domain are not registered
in the Windows Internet Naming Service (WINS). This can occur when the WINS
servers in the two domains do not replicate to each other.

RESOLUTION
==========

To resolve this issue, modify the Lmhosts file that contains the 1b and 1c
entries for the PDC of the trusted domain:

1. In a text editor (such as Notepad), open the Lmhosts file located in the
   %SystemRoot%\System32\drivers\etc folder.

2. Add the following lines to the Lmhosts file, using the name of the trusted
   domain, the Internet Protocol (IP) address, and the NetBIOS name of the PDC
   in the trusted domain, as indicated in the following example:

    10.0.0.1   PDCName   #PRE #DOM:DomainName
    10.0.0.1   "DOMAINNAME     \0x1b"   #PRE

    - Replace 10.0.0.1 in the example with the IP address of the PDC in the
      trusted domain.

    - Replace the PDCName with the NetBIOS name of the trusted domain PDC. When
      you specify the NetBIOS suffix (the sixteenth character), the spacing
      between the quotation marks is critical. There must be a total of 20
      characters within the quotation marks (the domain name plus the
      appropriate number of spaces to pad up to 15 characters plus the backslash
      (\) plus the NetBIOS hex representation of the service type).

    - Replace DomainName with the Windows NT 4.0 domain name of the trusted
      domain.

3. Save the changes to the Lmhosts file.

4. Specify the use of the Lmhosts file:

   a. In Control Panel, double-click Network.

   b. Click the Protocols tab.

   c. In the Network Protocols box, click TCP/IP Protocol, and then click
      Properties.

   d. In the WINS Address tab, click the Enable LMHOSTS Lookup check box, and
      then click OK.

5. Click Yes when you are prompted to restart your computer.

MORE INFORMATION
================

This behavior can also occur if you manually added the RestrictAnonymous
registry value to the registry on the PDC of the trusted domain. This value
prevents null session connections. In addition, this registry value also
prevents a trusting domain from connecting to the PDC in the trusted domain to
establish a trust relationship.

For information about establishing a trust relationship between domains, please
see the following article in the Microsoft Knowledge Base:

   Q178640 Could Not Find Domain Controller When Establishing a Trust

For more information about using an Lmhosts file, please see the following
articles in the Microsoft Knowledge Base:

   Q180094 How to Write an LMHOSTS File for Domain Validation

   Q163409 NetBIOS Suffixes (16th Character of the NetBIOS Name)

Additional query words:

======================================================================
Keywords          :  
Technology        : kbWinNTsearch kbWinNT400search kbwin2000AdvServ kbwin2000AdvServSearch kbwin2000DataServ kbwin2000DataServSearch kbwin2000Serv kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbwin2000ServSearch kbwin2000Search kbwin2000ProSearch kbwin2000Pro kbWinAdvServSearch kbWinDataServSearch
Version           : :2000,4.0
Issue type        : kbprb

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS
PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND.  MICROSOFT DISCLAIMS
ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  IN NO
EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.  SOME STATES DO NOT ALLOW THE EXCLUSION
OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
SO THE FOREGOING LIMITATION MAY NOT APPLY.

Copyright Microsoft Corporation 2001.