DOCUMENT:Q271963  10-AUG-2001  [winnt]
TITLE   :Services Do Not Start, Event ID 7023 Generates Message, 'Duplica
PRODUCT :Microsoft Windows NT
PROD/VER::4.0
OPER/SYS:
KEYWORDS:

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The information in this article applies to:

 - Microsoft Windows NT Workstation version 4.0 
 - Microsoft Windows NT Server version 4.0 
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SYMPTOMS
========

When you start your computer, some services (including but not limited to the
Workstation, Server, WWW, and FTP services) may not start, and Event Viewer may
record the following error message:

   Event ID: 7023 A Duplicate Name Exists on the Network.

CAUSE
=====

This behavior can occur for the following reasons:

 - A multihomed computer has the WINS Client [TCP/IP] protocol or the NetBEUI
   protocol enabled on both network adapters.

 - Multiple Windows Internet Naming Service (WINS) servers are present in the
   network environment, but replication between them is not configured.

 - WINS clients are registering with more than one WINS server ("split
   registration").

RESOLUTION
==========

To resolve this behavior, follow these steps:

1. Disable the NetBEUI protocol and the WINS Client [TCP/IP] protocol on the
   external network adapter on the multihomed server.

2. Configure the WINS servers to replicate between themselves.

3. Configure the WINS servers to point to themselves on the WINS Address tab in
   Microsoft TCP/IP Properties.

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

For more information about disabling the NetBEUI protocol and the WINS Client
[TCP/IP] protocol on one of your network adapters, please refer to the following
article in the Microsoft Knowledge Base:

   Q197157 Workstation Service Does Not Start

For more information about configuring the WINS Address tab, please refer to the
following article in the Microsoft Knowledge Base:

   Q150737 Setting Primary and Secondary WINS Server Options

For more information about configuring WINS replication, please refer to the
following white paper, which is available on the Microsoft anonymous FTP server
at the following location:

ftp://ftp.microsoft.com/bussys/winnt/winnt-docs/papers/Winswp.doc

File Name: Winswp.doc
Title : "Windows Internet Naming Service (WINS)"

Additional query words:

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Keywords          :  
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400
Version           : :4.0
Issue type        : kbprb

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