DOCUMENT:Q170660 13-JUN-2001 [sna] TITLE :TN3270 Server Access Violation in SetBestGroups() PRODUCT :Microsoft SNA Server PROD/VER:WINDOWS:3.0 SP1 OPER/SYS: KEYWORDS:kbnetwork ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft SNA Server, version 3.0 SP1 ------------------------------------------------------------------------------- SYMPTOMS ======== When a TN3270E print emulator attempts to open a printer session through the SNA Server 3.0 Service Pack 1 TN3270 Server, the TN3270 server may encounter the following access violation: Application exception occurred: App: tn3servr.DBG (pid=) Exception number: c0000005 (access violation) [data omitted] function: SetBestGroups FAULT ->01012c07 8b4804 mov ecx,[eax+0x4] ds:0068e922=???????? CAUSE ===== This is caused by a problem in the SNA Server 3.0 Service Pack 1 TN3270 server, which was introduced by the addition of support for multiple ports. STATUS ====== Microsoft has confirmed this to be a problem in SNA Server version 3.0 Service Pack 1. This problem was corrected in the latest SNA Server version 3.0 U.S. Service Pack. For information on obtaining this Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces): S E R V P A C K MORE INFORMATION ================ When this problem occurs, the stack back trace looks like the following: *----> Stack Back Trace <----* FramePtr ReturnAd Param#1 Param#2 Param#3 Param#4 Function Name 0ca5fc10 01013e60 00183230 0ca5fc34 001849a2 001833c8 tn3servr!SetBestGroups 0ca5fc98 0100faa8 00183230 001849a2 0ca5fcbc 001849a2 tn3servr!SRSGetSNAResourceFirst 0ca5fd54 010184e3 00183230 001849a2 00183888 00000010 tn3servr!SNAGenericSessionStart 0ca5fd70 010179b7 00183230 00183230 0101704b 00183230 tn3servr!TNTContinueDataFromNetwork 0ca5fd7c 0101704b 00183230 0ca5ff5c 0ca5fe3c 00183230 tn3servr!TNTContinueDataFromNetwork 0ca5fd94 01018580 00183230 010152b2 00183230 00000011 tn3servr!TNTContinueDataFromNetwork 0ca5fd9c 010152b2 00183230 00000011 0ca5fe3c 001837cc tn3servr!TNTDataFromNetwork 0ca5fe14 77f4f7c2 00000000 00000011 001837cc 7ffdf000 tn3servr!TCPRecv 0ca5fe28 77fb03bb 01015100 001837cc 00000000 00010017 kernel32! 0ca5ff5c 0100c876 00000003 0018d0b8 00000000 006ddcce ntdll! Additional query words: ====================================================================== Keywords : kbnetwork Technology : kbAudDeveloper kbSNAServSearch kbSNAServ300SP1 Version : WINDOWS:3.0 SP1 Issue type : kbbug Solution Type : kbfix ============================================================================= 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. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2001.