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DOCUMENT:Q102795 26-AUG-1993 [W_NT]
TITLE :NT Err Msg: A Duplicate Name Exists on the Network...
PRODUCT :Windows NT
PROD/VER:3.10
OPER/SYS:WINDOWS
KEYWORDS:
----------------------------------------------------------------------
The information in this article applies to:
- Microsoft Windows NT operating system version 3.1
- Microsoft Windows NT Advanced Server version 3.1
----------------------------------------------------------------------
SYMPTOMS
========
With Windows NT, multiple network adapters in one machine must be on
different networks (either physically separate networks or different
logical networks with different transport protocols). Otherwise, you
will receive the following error message:
A duplicate name exists on the network. This error prevented the
network from starting.
CAUSE
=====
The duplicate name exists on the network error occurs because each
adapter will attempt to register itself on the network using a NetBIOS
name. When the adapters try to register their NetBIOS names on the
network, only the first adapter that attempts to register its NetBIOS
name will succeed. The second adapter's attempt to register its name
will generate the error message above and fail to register.
Windows NT does not check for these potential conflicts when a second
network adapter is installed. Windows NT simply binds all installed
protocols to the second adapter, regardless of whether they were bound
to the first network adapter.
RESOLUTION
==========
To work around this error, either manually disable the bindings or
remove the conflicting protocol from the second network adapter. This
can be done using the Network option in Control Panel
Additional reference words: 3.10 W_NTAS
KBCategory:
KBSubcategory: netsrv prot
=============================================================================
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 1993.