SBS: NetBT Event 4319 Connecting to ISP (220831)

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256986 Description of the Microsoft Windows Registry

SYMPTOMS

When the Small Business Server computer connects to the Internet Service Provider, the following event is generated in event log:

Event ID: 4319
Source: NetBT
A duplicate name has been detected on the TCP network. The IP address of the node that sent the message is in the data. Use nbtstat -n in a command window to see which name is in the Conflict state.

After the duplicate name is detected, all NetBT operations on the server fail. These operations include network browsing and the Manage Server Console.

CAUSE

This problem is caused by the Small Business Server server registering the computer name or domain name with the WINS server at the Internet Service Provider. The name attempts to register with the WINS server until the WINS server responds with the duplicate name error. The Small Business Server server does not function using NetBT.

RESOLUTION

If you are connecting to your Internet Service Provider through a dial-up connection, this problem should be corrected by removing the WINS server entries on the Remote Access Server (RAS) phonebook entry that is used to dial the Internet Service Provider.

Follow these steps to remove these settings:

Navigate to Dial-Up Networking.
Select the Phonebook entry used to connect to the Internet Service Provider.
Click More, and then edit the entry and modem properties.
On the Server tab, select TCP/IP Settings.
Change the primary and secondary WINS addresses to all zeros.

If you are connecting to your Internet Service Provider through a Network Internet Card (NIC) on a multihomed computer, this behavior should be corrected by removing the WINS server entries on the NIC that connects to the Internet.

Navigate to Control Panel and click Networks.
On the Protocols tab, click TCP/IP, and then click Properties.
On the WINS tab, select the NIC that is connected to the Internet.
Change the primary and secondary WINS addresses to all zeros.

MORE INFORMATION

Some Internet Service Providers are automatically creating these entries for SBS customers and entering the WINS addresses. These should be in the registry key listed below, and not on the phonebook entry.

Most Internet Service Providers do not use WINS. The Internet Service Providers that support the online signup servers for SBS do use WINS to allow the SBS customers to have dynamic IP addresses for their dial-up connections. WINS is used by SBSETRN to register a secret name with the ISP for mail retrieval. The dial-up connection should not register the local computer name. SBSETRN does not need these addresses configured on the phonebook entry. It uses the WINS servers configured in the following registry location:

WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SmallBusiness\Internet\MS_IMS\WINS_Address

NOTE: This registry entry is only available after completeing the online signup process.