This article was previously published under Q310570
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."
This issue can occur if the EnableProxy key in the registry is set to an invalid value.
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:
Microsoft Windows Server 2003, Standard Edition (32-bit x86), Microsoft Windows Server 2003, Enterprise Edition (32-bit x86), Microsoft Windows XP Professional, Microsoft Windows Small Business Server 2003 Premium Edition, Microsoft Windows Small Business Server 2003 Standard Edition