Microsoft KB Archive/884550

= FIX: APPC and Common Programming Interface for Communications (CPI-C) applications may stop responding if the SNA Server service becomes unavailable =

Article ID: 884550

Article Last Modified on 12/4/2007

-

APPLIES TO


 * Microsoft Host Integration Server 2000 Standard Edition
 * Microsoft Host Integration Server 2000 Service Pack 1
 * Microsoft Host Integration Server 2004 Standard Edition

-





SYMPTOMS
APPC and Common Programming Interface for Communications (CPI-C) applications may stop responding (hangs) if the SNA Server service (Snaservr.exe) that the application is communicating through becomes unavailable.



CAUSE
The underlying Microsoft Host Integration Server dynamic address module (DMOD) client/server interface will try to establish a connection to another SNA Server service if it loses its connection to the SNA Server service that it was previously communicating with. If the connection to another SNA Server service fails and the DMOD retries the connection more than 32 times, an access violation occurs in the APPC library (Wappc32.dll). Any subsequent APPC or CPI-C calls that are issued by the application do not complete after the access violation occurs. Therefore, the APPC or CPI-C application stops responding.



Service pack information
To resolve this problem, obtain the latest service pack for Microsoft Host Integration Server 2000. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

328152 How to obtain the latest service pack for Host Integration Server 2000

Hotfix 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 tool in Control Panel.   Date         Time   Version    Size c   File name ---  20-Aug-2004  16:38  5.0.0.996  229,648  Wappc32.dll

Host Integration Server 2004
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 20-Aug-2004 17:36  6.0.1903.0  163,328  Wappc32.dll



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

This problem was corrected in Microsoft Host Integration Server 2000 Service Pack 2.

Keywords: kbbug kbfix kbhostintegserv2000presp2fix kbqfe kbhotfixserver KB884550

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.