DOCUMENT:Q224600 16-MAY-2002 [crossnet] TITLE :RPC Application Causes AV When Dereferencing Freed Connection PRODUCT :Windows for Workgroups and Windows NT Networking Issues PROD/VER:winnt:4.0,5.5 OPER/SYS: KEYWORDS:kbWinNT4sp6fix ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server version 4.0, Terminal Server Edition - Microsoft Windows NT Server version 4.0 - Microsoft Exchange Server, version 5.5 ------------------------------------------------------------------------------- SYMPTOMS ======== An application using the remote procedure call (RPC) transport, such as the Microsoft Exchange Server information store, may display an access violation error message. The error message is displayed because of a general protection fault that may occur when the Windows NT Remote Procedure Call Common Server Transport module is under stress. CAUSE ===== The Remote Procedure Call Common Server Transport module can attempt to dereference a buffer within a connection that has already been freed under high stress conditions. RESOLUTION ========== Windows NT Server or Workstation 4.0 ------------------------------------ To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the individual software update. For information on obtaining the latest service pack, please go to: - http://www.microsoft.com/Windows/ServicePacks/ -or- - Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack For information on obtaining the individual software update, contact Microsoft Product Support Services. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web: http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS Windows NT Server 4.0, Terminal Server Edition ---------------------------------------------- To resolve this problem, obtain the latest service pack for Windows NT Server 4.0, Terminal Server Edition. For additional information, please see the following article in the Microsoft Knowledge Base: Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack STATUS ====== Microsoft has confirmed this to be a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows NT Server version 4.0, Terminal Server Edition Service Pack 6. MORE INFORMATION ================ If the correct Windows NT symbols are installed, the resulting Dr. Watson log may have a stack dump similar to the following sample dump: Application exception occurred: App: exe\store.dbg (pid=334) When: 11/23/1998 @ 9:3:26.687 Exception number: c0000005 (access violation) State Dump for Thread Id 0x26a function: COMMON_ServerReceive 74fa42f7 7e4e jle COMMON_ServerReceive+0xc2 74fa42f9 6603f8 add di,ax 74fa42fc 6683ff10 cmp di,0x10 74fa4300 72d9 jb COMMON_ServerReceive+0x56 FAULT ->74fa4302 f6430410 test byte ptr [ebx+0x4],0x10 74fa4306 756b jnz COMMON_ServerReceive+0xee 74fa4308 8a4309 mov al,[ebx+0x9] *----> Stack Back Trace <----* FramePtr ReturnAd Param#1 Param#2 Param#3 Param#4 Function Name 2350fef8 74fa2214 00218744 2350ff88 2350ff84 00000000 rpcltscm!COMMON_ServerReceive 2350ff2c 77e18c00 00169698 2350ff58 2350ff88 2350ff84 rpcltscm!COMMON_ServerReceiveAny 2350ff60 77e1a587 2350ff8c 2350ff88 2350ff84 16640528 rpcrt4!TRANS_ADDRESS::TransReceive 2350ff90 77e1ac1c 77e15eaf 001695b8 2350ffec 74fa426c rpcrt4!OSF_ADDRESS::ReceiveLotsaCalls Additional query words: ====================================================================== Keywords : kbWinNT4sp6fix Technology : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbNTTermServ400 kbNTTermServSearch kbExchangeSearch kbExchange550 kbZNotKeyword2 Version : winnt:4.0,5.5 Hardware : ALPHA x86 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 2002.