Microsoft KB Archive/165088

= CPIC Application Stops Responding When Starting Conversation =

Article ID: 165088

Article Last Modified on 10/23/2003

-

APPLIES TO


 * Microsoft SNA Server 3.0 Service Pack 4

-



This article was previously published under Q165088



SYMPTOMS
When you run a CPIC application on Windows 95, the CPIC application stops responding intermittently when you try to acquire the conversation. Traces show that the CM_Init request is not getting a response.



CAUSE
This problem occurs if both of the following conditions are true:
 * The CPIC application calls WinCPICCleanup while there are pending RPC requests.

-and-
 * The RPC response arrives before SNAKRNL has closed all connections.

The following is a call to WinAPPCCleanup. Under the covers, there are still outstanding rpc requests:   APPC   WinAPPCCleanup response, result = TRUE CPIC  -- 09:34:42.49 CPIC  WinCPICCleanup response, result = TRUE CPIC  -- 09:34:42.99 CPIC  WinCPICStartup request CPIC CPIC  Version Requested = 1.0 APPC  -- 09:34:42.99 APPC  WinAPPCStartup request APPC APPC  Version Requested = 1.0 APPC  -- 09:34:42.99 APPC  WinAPPCStartup response, result = OK   APPC APPC  Version Supported = 1.0 CPIC  -- 09:34:42.99 CPIC  WinCPICStartup response, result = OK   CPIC CPIC  Version Supported = 1.0 The following is a request to start the conversation. There is no return to the CMNIT CPIC call:   CPIC   -- 09:34:43.10 CPIC  CMINIT request CPIC   Sym dest name = QR27 APPC  -- 09:34:43.10 APPC  TP_STARTED request APPC APPC  Type:Sync                                  VerbID:00001800 APPC APPC   Verb Parameter Block at address 01300000 APPC  14000000 00000000 00000000 00000000     <................> APPC  00000000 00000000 F80B5800 C3D7C9C3     <........8.X.CPIC> APPC  6DC4C5C6 C1D3E36D E3D72020 20202040      APPC  40404040 40404040 40404040 40404040     <@@@@@@@@@@@@@@@@> APPC  40404040 40404040 40404040 40404040     <@@@@@@@@@@@@@@@@> APPC  40404040 40404040 40404040              <@@@@@@@@@@@@    >



RESOLUTION
To resolve this problem, obtain the hotfix mentioned below. With the hotfix, SNAKRNL now ignores all RPC responses that arrive after WinCPICCleanup or WinAPPCCleanup.



STATUS
Microsoft has confirmed this to be a problem in SNA Server version 3.0. This problem was corrected in the latest Microsoft SNA Server 3.0 U.S. Service Pack. For information on obtaining the service pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

Additional query words: prodsna

Keywords: kbbug kbfix kbnetwork KB165088

-

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

© Microsoft Corporation. All rights reserved.