The First TN3270 Client on an OnDemand Connection Fails (235857)


The information in this article applies to:

  • Microsoft SNA Server 4.0 SP2
This article was previously published under Q235857

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:

    161492 LU Session Activation Using Dynamically Defined Dependent LUs

    164592 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, click the following article number to view the article in the Microsoft Knowledge Base:

215838 How to Obtain the Latest SNA Server Version 4.0 Service Pack

STATUS

Microsoft has confirmed that this is a problem in Microsoft SNA Server 4.0 Service Pack 2. This problem was first corrected in SNA Server 4.0 Service Pack 3.
Modification Type:MinorLast Reviewed:9/22/2005
Keywords:kbHotfixServer kbQFE kbbug kbfix kbQFE kbsna400sp3fix KB235857
©2004 Microsoft Corporation. All rights reserved.