Microsoft KB Archive/888611

= TN3270 clients cannot connect to the TN3270 Server after a configuration change is made to the TN3270 Server =

Article ID: 888611

Article Last Modified on 12/4/2007

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APPLIES TO


 * Microsoft Host Integration Server 2004 Standard Edition

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SYMPTOMS
In Microsoft Host Integration Server 2004, TN3270 clients cannot connect to a TN3270 Server after an administrator makes a configuration change to the TN3270 Server while the TN3270 service is active. TN3270 clients that were connected to the TN3270 Server before the configuration change was made are unaffected. The following event is logged by the TN3270 Server when a TN3270 client tries to connect to the TN3270 Server after the configuration change: Event ID: 1070

Source: TN3270 Server

Description: No security record available for port 23

Explanation: A connection has been rejected, either due to a bad configuration or a failing to authenticate a client certificate.

Action: Check that the client certificate is valid and that the port security is correctly configured.

Note This problem occurs even if the TN3270 Server is not configured to support SSL encryption.



CAUSE
This problem occurs because the internal SSL queue is not refreshed correctly when the configuration is reread.



RESOLUTION
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.      Date         Time   Version            Size    File name --  09-Nov-2004  22:21  6.0.1914.0        241,664  Tn3servr.exe

Note Because of file dependencies, the most recent fix that contains these files may also contain additional files.



WORKAROUND
If the TN3270 Server is stopped and restarted after you make the configuration change, TN3270 clients can connect to the TN3270 Server.

Note If you stop the TN3270 Server, all users who currently have TN3270 sessions through the TN3270 Server will be disconnected.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

Additional query words: HIS2004

Keywords: kbbug kbfix kbqfe kbhotfixserver KB888611

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