DOCUMENT:Q192295 20-MAY-2002 [iis] TITLE :IIS Causes Memory Leak When Using Secure Sockets Layer (SSL) PRODUCT :Internet Information Server PROD/VER:winnt:4.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Internet Information Server version 4.0 ------------------------------------------------------------------------------- SYMPTOMS ======== Microsoft Internet Information Server (IIS) causes a memory leak when you use the Secure Sockets Layer (SSL). By tracking the amount of private bytes for Inetinfo.exe, you will see that over time private bytes increase. CAUSE ===== The memory leak occurs on each client accessed over the HTTP connection. IIS fails to free the memory allocated by Schannel.dll. RESOLUTION ========== A fix is available for this problem and can be obtained one of two ways: 1. Upgrade to Windows NT service pack 5 or IIS version 5.0. 2. Apply the hotfix to follow. The English version of this fix should have the following file attributes or later: Date Time Size File Name Platform ------------------------------------------------------------- 10/14/98 05:40p 27,696 admwprox.dll (x86) 10/14/98 05:42p 330,976 asp.dll (x86) 10/14/98 05:40p 43,456 coadmin.dll (x86) 10/14/98 05:41p 11,168 ftpctrs2.dll (x86) 10/14/98 05:41p 81,376 ftpsvc2.dll (x86) 10/14/98 05:40p 10,224 iisfecnv.dll (x86) 10/14/98 05:40p 61,920 iislog.dll (x86) 10/14/98 05:40p 16,848 infoadmn.dll (x86) 10/14/98 05:40p 184,192 infocomm.dll (x86) 10/14/98 05:40p 9,584 infoctrs.dll (x86) 10/14/98 05:39p 47,936 isatq.dll (x86) 10/14/98 05:40p 29,520 iscomlog.dll (x86) 10/14/98 05:40p 13,856 lonsint.dll (x86) 10/14/98 05:40p 71,232 metadata.dll (x86) 10/14/98 05:40p 7,488 rpcref.dll (x86) 10/14/98 05:40p 12,592 spud.sys (x86) 10/14/98 05:40p 18,032 svcext.dll (x86) 10/14/98 05:41p 14,752 w3ctrs.dll (x86) 10/14/98 05:41p 226,864 w3svc.dll (x86) 10/14/98 05:40p 60,192 wam.dll (x86) 10/14/98 05:42p 49,424 admwprox.dll (Alpha) 10/14/98 05:44p 545,552 asp.dll (Alpha) 10/14/98 05:42p 77,072 coadmin.dll (Alpha) 10/14/98 05:43p 17,168 ftpctrs2.dll (Alpha) 10/14/98 05:43p 126,224 ftpsvc2.dll (Alpha) 10/14/98 05:42p 17,680 iisfecnv.dll (Alpha) 10/14/98 05:42p 110,864 iislog.dll (Alpha) 10/14/98 05:42p 25,872 infoadmn.dll (Alpha) 10/14/98 05:42p 302,864 infocomm.dll (Alpha) 10/14/98 05:42p 15,120 infoctrs.dll (Alpha) 10/14/98 05:41p 82,704 isatq.dll (Alpha) 10/14/98 05:42p 45,840 iscomlog.dll (Alpha) 10/14/98 05:42p 23,312 lonsint.dll (Alpha) 10/14/98 05:42p 13,584 lonsiw95.dll (Alpha) 10/14/98 05:42p 131,856 metadata.dll (Alpha) 10/14/98 05:42p 12,048 rpcref.dll (Alpha) 10/14/98 05:42p 20,912 spud.sys (Alpha) 10/14/98 05:42p 29,456 svcext.dll (Alpha) 10/14/98 05:43p 21,264 w3ctrs.dll (Alpha) 10/14/98 05:43p 380,688 w3svc.dll (Alpha) 10/14/98 05:43p 98,576 wam.dll (Alpha) Hotfix Resolution ----------------- A supported fix that corrects this problem is now available from Microsoft for those who do not wish to upgrade, but has not been fully regression tested and should be applied only to systems experiencing this specific problem. To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. 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 STATUS ====== Microsoft has confirmed this to be a problem in Internet Information Server version 4.0. This problem was corrected in Internet Information Server version 5.0 or Windows NT service pack 5. Additional query words: IIS hotfix hot fix qfe quick engineering patch ====================================================================== Keywords : Technology : kbiisSearch kbiis400 Version : winnt:4.0 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.