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Q235857: The First TN3270 Client on an OnDemand Connection Fails

Article: Q235857
Product(s): Microsoft SNA Server
Version(s): WINDOWS:4.0 SP2
Operating System(s): 
Keyword(s): kbsna400sp3fix kbsna400sp2
Last Modified: 08-MAY-2002

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The information in this article applies to:

- Microsoft SNA Server, version 4.0 SP2 
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SYMPTOMS
========

After you apply SNA Server 4.0 Service Pack 2 (SP2), TN3270 users may experience
one of the following problems:

- The first TN3270 client that connects to an OnDemand connection fails. The
  connection is brought up, but the client remains in a not responding state,
  and the LU shows in SSCP state. This only affects the first client; all
  subsequent clients connect successfully. If the connection is set to Server
  Startup, everything works fine.

- If the host uses DDDLUs, TN3270 clients may display the following error
  message when they start a host session through the SNA Server TN3270 server:

  TN3270E Service Message 525

  The PU is active for LU <LU name>.

  You may continue to wait, or terminate your session.

  After the error message appears, the user may be able to obtain a host session
  by disconnecting and then reconnecting the session from within the TN3270
  emulator.

  For additional information about SNA Server's DDDLU support for 3270 and LUA
  LUs, please see the following articles in the Microsoft Knowledge Base:

  Q161492 LU Session Activation Using Dynamically Defined Dependent LUs

  Q164592 Dynamically Defined Dependent LU Support for LUA LUs

RESOLUTION
==========

To resolve this problem, obtain the latest service pack for SNA Server version
4.0. For additional information, please see the following article in the
Microsoft Knowledge Base:

  Q215838 How to Obtain the Latest SNA Server Version 4.0 Service Pack


STATUS
======

Microsoft has confirmed this to be a problem in Microsoft SNA Server version 4.0
service pack 2. This problem was first corrected in SNA Server version 4.0
Service Pack 3.

Additional query words: snatn3270

======================================================================
Keywords          : kbsna400sp3fix kbsna400sp2 
Technology        : kbAudDeveloper kbSNAServSearch kbSNAServ400SP2
Version           : WINDOWS:4.0 SP2
Issue type        : kbbug
Solution Type     : kbfix

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