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


View products that this article applies to.

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.

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Cause

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

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Resolution

A supported hotfix is 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 software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if 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. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.
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.

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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.

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Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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Keywords: KB888611, kbbug, kbfix, kbqfe, kbhotfixserver, kbautohotfix

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Article Info
Article ID : 888611
Revision : 8
Created on : 12/4/2007
Published on : 12/4/2007
Exists online : False
Views : 422