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Q239132: Exchange Clients Appear to Hang During Normal Operation

Article: Q239132
Product(s): Microsoft Windows NT
Version(s): winnt:4.0,5.0,5.0 SP1,5.0 SP2,5.5,5.5 SP1,5.5 SP2,5.5 SP3
Operating System(s): 
Keyword(s): kbWinNT4sp6fix
Last Modified: 20-MAY-2002

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The information in this article applies to:

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

Microsoft Exchange and Outlook Clients appear to stop responding (hang)
periodically during normal operation when used in conjunction with an Exchange
Server computer that has clients that connect over slower connections.

CAUSE
=====

The remote procedure call (RPC) Receive Any Thread in use by the Microsoft
Exchange Information Store Service is waiting to receive additional information
from a client.

RESOLUTION
==========

Windows NT Server or Workstation 4.0
------------------------------------

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the
individual software update. For information on obtaining the latest service
pack, please go to:

- http://www.microsoft.com/Windows/ServicePacks/

-or-

- Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack

For information on obtaining the individual software update, contact Microsoft
Product Support Services. For a complete list of Microsoft Product Support
Services phone numbers and information on support costs, please go to the
following address on the World Wide Web:

  http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS


Windows NT Server 4.0, Terminal Server Edition
----------------------------------------------

To resolve this problem, obtain the latest service pack for 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


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 Server 4.0 Service Pack 6 and
Windows NT Server 4.0, Terminal Server Edition Service Pack 6.

MORE INFORMATION
================

Clients that are connecting to the Exchange Server computer over slower
connections have a higher latency in the sending and receiving of data grams.
The RPC Receive Any Thread is waiting on additional data grams before processing
the clients request. This causes other clients that are attempting to
communicate on the Receive Any thread to the Exchange Information Store to
appear to hang while waiting for a response from the Exchange Server computer.

For additional information on performance issues, please refer to the following
article in the Microsoft Knowledge Base:

  Q232512 TCP/IP may Retransmit Packets Prematurely



Additional query words: 4.00 exchange performance slow client

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Keywords          : kbWinNT4sp6fix 
Technology        : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTSEntSearch kbWinNTSEnt400 kbWinNTS400search kbWinNTS400 kbNTTermServ400 kbNTTermServSearch
Version           : winnt:4.0,5.0,5.0 SP1,5.0 SP2,5.5,5.5 SP1,5.5 SP2,5.5 SP3
Hardware          : ALPHA x86
Issue type        : kbbug
Solution Type     : kbfix

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