"A Duplicate Name Exists on the Network" error message in Windows NT 3.1 (102795)
The information in this article applies to:
- Microsoft Windows NT Server 3.1
- Microsoft Windows NT Workstation 3.1
- Microsoft Windows NT Advanced Server 3.1
This article was previously published under Q102795 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
| Modification Type: | Major | Last Reviewed: | 10/6/2004 |
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| Keywords: | kbnetwork KB102795 |
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