WINS Server Sporadically Loses Name Resolution

• Microsoft Windows NT Server versions 3.50, 3.51, and 4.0

SYMPTOMS

A Windows NT Windows Internet Name Service (WINS) server may sporadically lose its ability to resolve NetBIOS names by means of WINS. This problem may also manifest itself as domain synchronization, browsing, or connectivity problems.

CAUSE

This problem can occur when a WINS server is configured to point to itself as the primary WINS server and the secondary WINS server is left blank. IPCONFIG /all may show the secondary WINS server to be its own IP address but no primary WINS server is listed. When this condition occurs, all WINS name resolution for this server is lost. This can effect browsing, domain synchronization and connectivity. However, clients pointing to this machine as a WINS server are unaffected. This condition may happen occasionally or not at all.

WORKAROUND

On each WINS server, double-click the Network icon in Control Panel, and select TCP/IP Protocol, then Configure. Set the addresses of the primary and secondary WINS servers to be the same as the IP address of the computer itself (this will be listed above as "IP Address"). Having WINS servers pointing to other WINS servers as primary or secondary is discouraged.

STATUS

Microsoft has confirmed this to be a problem in Windows NT versions 3.5, 3.51, and 4.0. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.