DOCUMENT:Q326900 30-JUL-2002 [sna] TITLE :FIX: Stop XID Exchange When It Does Not Complete PRODUCT :Microsoft SNA Server PROD/VER:: OPER/SYS: KEYWORDS:kbhis2000 kbhis2000bug ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Host Integration Server 2000 ------------------------------------------------------------------------------- IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base: Q256986 Description of the Microsoft Windows Registry SUMMARY ======= Under certain error conditions, when the SNA Server service tries to open a connection, the Exchange Identifiers (XIDs) that are exchanged between two link stations to establish a connection cannot be negotiated. This behavior causes a perpetual XID negotiation deadlock situation. In the Host Integration Server 2000 Management Console snap-in, the affected connection shows a "pending" status. If a client application is started at this time, the application is queued up. However, the application stops responding because it is not notified that the connection cannot be established. By using the fix that is described in the "More Information" section, you can add a counter, so that you can stop this XID negotiation after a set number of tries. MORE INFORMATION ================ A supported feature that modifies the product's default behavior is now available from Microsoft, but it is only intended to modify the behavior that is described in this article. Apply it only to systems that specifically need it. This feature may receive additional testing. Therefore, if your system is not severely affected by the lack of this feature, Microsoft recommends that you wait for the next Product Name service pack that contains this feature. To obtain this feature immediately, contact Microsoft Product Support Services. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, visit the following Microsoft Web site: http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS The English version of this fix has the file attributes (or later) 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 ---------------------------------------------------------- 16-May-2002 21:49 5.0.0.860 98,576 Snadlc.dll WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk. After you apply this fix, you can manually add a registry entry to turn on this functionality. To do this, follow these steps: 1. Start Registry Editor (Regedt32.exe). 2. Locate and then click the following key in the registry: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SnaDlcx\Parameters\ExtraParameter where x stands for the appropriate instance of the Link Service, (for example, SnaDlc1). 3. On the Edit menu, click Add Value, and then add the following registry value: Value name: XIDAbortCounter Data type: REG_DWORD DWORD: 1 - 20 (Decimal) 4. Quit Registry Editor. When you set this DWORD, XID negotiation stops after the specified number of completed XID negotiation attempts if the link connection cannot be established. When negotiation stops, an Event 23 that has Outage code 0x29 is logged in the Application Event log. NOTE: Because of file dependencies, the most recent fix that contains the above files may also contain additional files. Additional query words: XID NULL hang abort ====================================================================== Keywords : kbhis2000 kbhis2000bug Technology : kbAudDeveloper kbHostIntegServ2000 Version : : Issue type : kbinfo ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. 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