Server Manager Cannot Find DC with TCP/IP and ELNK3

 Last reviewed: May 14, 1997
Article ID: Q112826
The information in this article applies to:
  • Microsoft Windows NT operating system version 3.1
  • Microsoft Windows NT Advanced Server version 3.1

SYMPTOMS

When you use the 3Com EtherLink III adapter model 3c509 or the 3c579 network interface card with TCP/IP as the only protocol, the following error message appears when you open Server Manager locally on the domain controller (DC): 

   Cannot find the primary DC for <domain>. You may administer this
   domain, but certain domain-wide operations will be disabled.

CAUSE

Windows NT streams-based TCP/IP does not set the lookahead buffer size. The default lookahead buffer size that the ELNK3 driver sets is too small. This only effects loopback packets.

WORKAROUND

Bind NetBEUI to the ELNK3 driver. NetBEUI sets the lookahead buffer size properly.

STATUS

Microsoft has confirmed this to be a problem in Windows NT and Windows NT Advanced Server version 3.1. This problem has been corrected in the latest U.S. Service Pack for Windows NT and Windows NT Advanced Server version 3.1. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces): 

   S E R V P A C K

Additional query words: prodnt ntas
Keywords : kbbug3.10 kbnetwork ntdriver nttcp
Version : 3.1
Platform : WINDOWS

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Last reviewed: May 14, 1997
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