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Q181799: RPC/TCP Connection Attempt Made Only to First Address

Article: Q181799
Product(s): Microsoft Windows NT
Version(s): WinNT:4.0
Operating System(s): 
Keyword(s): kbnetwork kbWinNT400sp4fix kbAPI kbRPC kbSDKPlatform kbGrpDSNet
Last Modified: 09-AUG-2001

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The information in this article applies to:

- Microsoft Windows NT Workstation version 4.0 
- Microsoft Windows NT Server version 4.0 
- Microsoft Windows NT Server version 4.0, Terminal Server Edition 
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SYMPTOMS
========

In Windows NT 4.0 and prior versions, when an RPC connection is attempted using
protocol binding sequence ncacn_ip_tcp, if the DNS returns a list of IP
addresses for the target computer, the connection attempt will only be made to
the first IP address in the list. If that connection attempt fails, the RPC
connect will fail.

CAUSE
=====

RPC only attempts to connect to the first IP address in the list returned by the
Windows Sockets gethostbyname() call.

RESOLUTION
==========

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or
Windows NT Server 4.0, Terminal Server Edition. For additional information,
please see the following article in the Microsoft Knowledge Base:

  Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack


NOTE: This hotfix supersedes the fixes referred to in the "Windows NT 4.0 RPC
Binds Hang When the Server Is Restarted" section of the following article in the
Microsoft Knowledge Base:

  ARTICLE-ID: Q147222
  TITLE : Group of Hotfixes for Exchange 5.5 and IIS 4.0


STATUS
======

Microsoft has confirmed this to be a problem in Windows NT 4.0 and Windows NT
Server 4.0, Terminal Server Edition. This problem was first corrected in Windows
NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition
Service Pack 4.


Additional query words: multihomed
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Keywords          : kbnetwork kbWinNT400sp4fix kbAPI kbRPC kbSDKPlatform kbGrpDSNet 
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbNTTermServ400 kbNTTermServSearch
Version           : WinNT:4.0
Issue type        : kbbug
Solution Type     : kbfix

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