Microsoft KB Archive/197157

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Article ID: 197157

Article Last Modified on 2/27/2007


  • Microsoft Windows NT Server 4.0, Terminal Server Edition
  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Advanced Server
  • Microsoft BackOffice Server 4.0
  • Microsoft BackOffice Server 4.5
  • Microsoft Windows NT Server 4.0 Standard Edition
  • Microsoft Windows NT Server 4.0 Enterprise Edition

This article was previously published under Q197157


When you start or reboot a computer that has two network adapters installed, the Workstation service may not start and the following error messages may appear in Event Viewer:

   Event ID: 3870
   Source: Workstation
   Description: <computer name> is not a valid computer name.

   Event ID: 7023
   Source: Service Control Manager
   Description: The Workstation service terminated with the following
   error: A duplicate name exists on the network.


This behavior can occur if both network adapters attempt to register the same NetBIOS name with the Microsoft Windows Internet Naming Service (WINS).


To resolve this issue, disable the NetBEUI protocol that is bound to one of the network adapters. To do this:

  1. Click Start, point to Settings, click Control Panel, and then double- click Network.
  2. Click the Bindings tab, and then click All Adapters in the Show Bindings For box.
  3. Click the plus sign next to the second network adapter.
  4. Click NetBEUI Protocol, and then click Disable.
  5. Click Close, and then restart the computer.


Microsoft has confirmed this to be a problem in the products listed above.


For more information about NetBIOS names and WINS, see the following article in the Microsoft Knowledge Base.

103470 NetBIOS Name Conflicts When NetBEUI Used on Multiple NICs

Keywords: kbenv kbnetwork kbprb KB197157