DOCUMENT:Q303818 08-MAY-2002 [winnt] TITLE :Memory Leak in Rpcss.exe When Freeing ORPC Extends PRODUCT :Microsoft Windows NT PROD/VER::2000,2000 SP1,2000 SP2,4.0,4.0 SP1,4.0 SP2,4.0 SP3,4.0 SP4,4.0 SP5,4.0 SP6a OPER/SYS: KEYWORDS:kbtool kbWinNT400PreSP7Fix kbWin2000PreSP3Fix ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows versions 2000, 2000 SP1, 2000 SP2 Professional - Microsoft Windows versions 2000, 2000 SP1, 2000 SP2 Server - Microsoft Windows versions 2000, 2000 SP1, 2000 SP2 Advanced Server - Microsoft Windows NT Server versions 4.0, 4.0 SP1, 4.0 SP2, 4.0 SP3, 4.0 SP4, 4.0 SP5, 4.0 SP6a - Microsoft Windows NT Workstation versions 4.0, 4.0 SP1, 4.0 SP2, 4.0 SP3, 4.0 SP4, 4.0 SP5, 4.0 SP6a ------------------------------------------------------------------------------- SYMPTOMS ======== By using Performance Monitor, you might observe a continuous increase in private bytes for the Rpcss process. This memory leak in Rpcss.exe occurs with COM and DCOM programs. CAUSE ===== This issue occurs because a virtual 8-byte allocation is not freed in Rpcss.exe. RESOLUTION ========== Windows 2000 ------------ A supported fix is now available from Microsoft, but it is only intended to correct the problem described in this article and should be applied only to systems experiencing this specific problem. This fix may receive additional testing at a later time, to further ensure product quality. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Windows 2000 service pack that contains this fix. 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 about support costs, please go to the following address on the World Wide Web: http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS NOTE: In special cases, charges that are normally incurred for support calls may be canceled, if a Microsoft Support Professional determines that a specific update will resolve your problem. Normal support costs will apply to additional support questions and issues that do not qualify for the specific update in question. The English version of this fix should have the following file attributes or later: Date Time Size File name -------------------------------------- 20-Sep-01 14:48 941,328 ole32.dll 20-Sep-01 14:48 428,304 rpcrt4.dll 20-Sep-01 14:48 185,104 rpcss.dll Windows NT 4.0 -------------- A supported fix is now available from Microsoft, but it is only intended to correct the problem described in this article and should be applied only to systems experiencing this specific problem. To resolve this problem, 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 NOTE: In special cases, charges that are normally incurred for support calls may be canceled, if a Microsoft Support Professional determines that a specific update will resolve your problem. Normal support costs will apply to additional support questions and issues that do not qualify for the specific update in question. The English version of this fix should have the following file attributes or later: Date Time Size File name ------------------------------------ 07/11/2001 20:51 685 KB Ole32.dll 07/14/2001 18:31 105 KB Rpcss.exe NOTE: Because of file dependencies, this hotfix requires Microsoft Windows NT 4.0 Service Pack 6a. STATUS ====== Windows 2000 ------------ Microsoft has confirmed this to be a problem in Windows 2000. Windows NT 4.0 -------------- Microsoft has confirmed this to be a problem in Windows NT 4.0.Microsoft has confirmed this to be a problem in the Microsoft products that are listed at the beginning of this article. MORE INFORMATION ================ The private bytes increase in 16-byte or 32-byte allocation units. For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the article number below to view the article in the Microsoft Knowledge Base: Q265173 The Datacenter Program and Windows 2000 Datacenter Server Product For additional information about how to install multiple hotfixes with only one reboot, click the article number below to view the article in the Microsoft Knowledge Base: Q296861 Use QChain.exe to Install Multiple Hotfixes with One Reboot Additional query words: ====================================================================== Keywords : kbtool kbWinNT400PreSP7Fix kbWin2000PreSP3Fix Technology : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbwin2000AdvServ kbwin2000AdvServSearch kbwin2000Serv kbWinNTW400sp5 kbWinNTW400sp4 kbWinNTW400sp3 kbWinNTW400sp2 kbWinNTW400sp1 kbWinNTSsearch kbWinNTS400sp6 kbWinNTS400sp5 kbWinNTS400sp4 kbWinNTS400sp3 kbWinNTS400sp2 kbWinNTS400sp1 kbWinNTS400search kbWinNTS400 kbwin2000ServSearch kbwin2000Search kbwin2000ProSearch kbwin2000Pro kbWinAdvServSearch kbWin2000AdvServSP2 kbWin2000AdvServSP1 kbWin2000ProSP2 kbWin2000ProSP1 kbwin2000ServSP1 kbwin2000ServSP2 kbWinNTW400SP6a Version : :2000,2000 SP1,2000 SP2,4.0,4.0 SP1,4.0 SP2,4.0 SP3,4.0 SP4,4.0 SP5,4.0 SP6a 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. 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