FIX: TN3270 service terminates unexpectedly when a TN3270 client that has a 32-character host name connects to the service in Host Integration Server 2010


Consider the following scenario:
  • A TN3270 client connects to a Microsoft Host Integration Server 2010 TN3270 service.
  • The TN3270 service starts a TN3270 session to an IBM mainframe.
  • The host name of the TN3270 client workstation is 32 characters long. For example, the host name of the client workstation is ""
In this scenario, the TN3270 service terminates unexpectedly. Additionally, an event that resembles the following is logged in the System log:

Event ID: 7034

Source: Service Control Manager


The TN3270 service terminated unexpectedly. It has done this 1 time(s).


Additionally, an event that resembles the following may be logged in the Application log:

Event ID: 1000

Source: Application Error


Faulting application name: tn3servr.exe, version: 8.5.4430.2, time stamp: 0x4ed96d6a

Faulting module name: MSVCR80.dll, version: 8.0.50727.6195, time stamp: 0x4dcdd833

Exception code: 0xc000000d

Fault offset: 0x000000000001d5fa

Faulting process id: 0xfb4

Faulting application start time: 0x01cd911259ea7251

Faulting application path: C:\Program Files\Microsoft Host Integration Server 2010\system\tn3servr.exe

Faulting module path: C:\Windows\WinSxS\amd64_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.6195_none_88e41e092fab0294\MSVCR80.dll

Report Id: 9f090c5a-fd05-11e1-84cc-00155d4d5902



To resolve this problem, apply either the cumulative update or the hotfix that is mentioned in this article.

Cumulative update information

The fix that resolves this issue is included in cumulative update package 6 for Host Integration Server 2010. For more information about how to obtain the cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
2752426 Cumulative update package 6 for Host Integration Server 2010

Hotfix information

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.

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, submit a request to 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 website: 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.


To apply this hotfix, you must have cumulative update package 5 for Host Integration Server 2010 installed.

Restart information

You do not have to restart the computer after you apply this hotfix.

File information

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 item in Control Panel.
For all supported x86-based versions of Host Integration Server 2010
File nameFile versionFile sizeDateTimePlatform
For all supported x64-based versions of Host Integration Server 2010
File nameFile versionFile sizeDateTimePlatform
Note Because of file dependencies, the most recent fix that contains these files may also contain additional files.


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


To work around this issue, disable the Use name resolution option in the TN3270 properties. To do this, follow these steps:
  1. Open the SNA Manager Microsoft Management Console (MMC) snap-in.
  2. Expand the entry for the Host Integration Server server.
  3. Right-click TN3270, and then click Properties.
  4. Disable the Use name resolution option.
  5. Click OK.
  6. Save the Host Integration Server configuration.
Note If you have assigned TN3270 logical units (LU) pools to workstation names and have disabled the Use name resolution option, the workstations cannot connect to the TN3270 LU pools that are assigned to them. In this case, you should not disable the option.

More Information

There are additional issues that are related to using a host name that is longer than 31 characters:
  • When you view active TN3270 sessions in SNA Manager, the TN3270 Client column displays only the first 31 characters of the TN3270 client workstation's host name.
  • Assume that you assign a TN3270 LU pool to a workstation name, and the host name is longer than 31 characters. Then, you edit the workstation name, and this causes it to be truncated. In this situation, the affected TN3270 client workstation cannot connect to the assigned LU pool after you save the workstation name. You must manually add the truncated characters back to the workstation name before you save the changes.
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

Identyfikator artykułu: 2756124 — ostatni przegląd: 28.11.2012 — zmiana: 1