Symptoms
When you use the Ipconfig.exe utility with the /all switch that shows the TCP/IP configurations on your computer, the node type may appear as "unknown."
Cause
This issue can occur if the EnableProxy key in the registry is set to an invalid value.
Resolution
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows
To resolve this issue, use Registry Editor (Regedit.exe) to locate the following key in the registry:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Netbt\Parameters\ Change the value of the EnableProxy value in the preceding registry key to 0 or 1, quit Registry Editor, and then restart your computer.
More Information
For additional information about related topics, click the article numbers below to view the articles in the Microsoft Knowledge Base:
121004 WINS Proxy Agent Functionality
164765 How to Enable WINS Proxy Agent in Windows NT 4.0
120642 TCP/IP and NBT Configuration Parameters for Windows 2000 or Windows NT
