This step-by-step article describes how to configure a
computer running Windows Server 2003 with TCP/IP networking while NetBIOS is
On a computer running Windows Server 2003, you can turn
off NetBIOS over TCP/IP (NetBT) for selected clients on an "as needed" basis.
If you prefer to only use DNS to provide name registration and resolution on a
specified computer that is used in a specialized or secured role for your
network, you can turn off NetBT services for one or all of the network adapters
that are installed on that computer.
To turn off WINS/NetBT name resolution, follow these steps:
- Click Start, point to Settings, and then click Network Connections.
- Right-click the local area connection that you want to be
statically configured, and then click Properties.
- Click Internet Protocol (TCP/IP), click Properties, click Advanced, and then click the WINS tab.
- Click Disable NetBIOS over TCP/IP.
NOTE: Before you turn off WINS/NetBT name resolution, verify that you
do not need to use WINS or earlier NetBT-type applications for this network
connection. For example, you can turn off WINS/NetBT name resolution if you
communicate only with other that run a product in Windows Server 2003
(Microsoft Windows XP, or Microsoft Windows 2000) that use DNS and that
register their names with DNS, or if you communicate with Internet computers
using DNS-aware applications. Do not turn off WINS/NetBT name resolution if you
communicate with computers that run a version of Windows that may use WINS or
earlier NetBT-type applications (such as Microsoft Windows NT, Microsoft
Windows Millennium Edition, Microsoft Windows 98, or Microsoft Windows 95).
- Click OK, click OK, and then click OK again.
: Optionally, you can select the Use NetBIOS
setting from the Dynamic Host Configuration Protocol (DHCP)
server if you use a DHCP server that can selectively turn on and turn off
NetBIOS configurations through DHCP option types. When you use DHCP option
types that are supported by the Windows Server 2003 DHCP Server service, you
can turn off NetBIOS over TCP/IP for computers that run Windows Server
Computers That Run Windows Server 2003 Operating Systems
- The computer no longer listens for traffic on the NetBIOS
datagram service at User Datagram Protocol (UDP) port 138, the NetBIOS name
service at UDP port 137, or the NetBIOS session service at Transmission Control
Protocol (TCP) port 139.
- If the computer needs to participate in WINS as a client,
it must be physically multihomed (that is, it must have other physical network
connections active and available for its use) for it to continue to communicate
with and use a WINS server.
Computers That Operate as WINS Clients
- The computer can no longer function as a WINS server to
service WINS clients over the connection unless you turn NetBT on
- For those adapters to use WINS, you must either manually
configure a list of WINS servers on the NetBT connections that are turned on,
or you must use a DHCP server to provide a list of WINS servers to these
NOTE: WINS servers that are configured in TCP/IP properties for the
network adapter that is turned off do not apply to other installed network
Down-Level Clients, Services, and Programs
- NetBIOS defines a software interface and a naming
convention. It does not define a protocol. NetBIOS over TCP/IP provides the
NetBIOS programming interface over the TCP/IP protocol. It extends the reach of
NetBIOS client and server programs to the wide area network (WAN). It also
provides interoperability with various other operating systems.
- The Workstation service, Server service, Browser service,
Messenger service, and Net Logon service are all direct NetBT clients. They use
Transport Driver Interface (TDI) to communicate with NetBT. Microsoft Windows
NT, Windows 2000, and Windows Server 2003 also include NetBIOS emulators. The
emulator takes standard NetBIOS requests from NetBIOS programs and translates
them to equivalent TDI primitives.
- Windows Server 2003 uses NetBIOS over TCP/IP to communicate
with earlier versions of Windows NT and other clients, such as Microsoft
You must do careful testing before you turn off NetBIOS
over TCP/IP in any production environment. Programs and services that depend on
NetBIOS no longer work after you turn off NetBT services, so it is important
that you verify that your clients and programs no longer require NetBIOS
support before you turn it off.
NOTE: Computers that run an operating system earlier than Windows 2000
will not be able to browse, locate, or create file and print share connections
to a computer that runs a product in Windows Server 2003 with NetBIOS turned
Article ID: 323357 - Last Review: December 3, 2007 - Revision: 6.4
- Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
- Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
- Microsoft Windows Server 2003, Standard Edition (32-bit x86)
- Microsoft Windows Server 2003, Web Edition
- Microsoft Windows Server 2003, 64-Bit Datacenter Edition
- Microsoft Windows Server 2003, Enterprise x64 Edition
- Microsoft Windows Small Business Server 2003 Premium Edition
- Microsoft Windows Small Business Server 2003 Standard Edition
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