Article ID: 835517 - View products that this article applies to.
After you install Microsoft Windows 2000 Service Pack 4 (SP4), a memory leak condition may occur on a server that also has Microsoft Operations Manager (MOM) installed. When you try to log on to the server computer, you may experience one or more memory errors. Additionally, the server may stop responding (hang), and event ID 2020 may appear in the system event log.
This problem may occur if programs generate remote procedure call (RPC) network traffic. This problem may affect MOM because MOM generates RPC traffic when it communicates with managed agents.
Hotfix informationA supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem.
If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, submit a request to Microsoft Customer Service and Support to obtain the hotfix.
Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
PrerequisitesYou must have Windows 2000 SP4 installed to apply this hotfix. If MOM 2000 SP1 is installed on the server, stop the MOM Service (Onepoint) before you apply this hotfix.
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/260910/ )How to obtain the latest Windows 2000 service pack
Restart requirementYou must restart your computer after you apply this hotfix.
Hotfix replacement informationThis hotfix replaces Knowledge Base article 825237.
File informationThe English version of this has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
Date Time Version Size File name ----------------------------------------------------------- 02-Feb-2004 19:59 5.0.2195.6824 42,256 Basesrv.dll 21-Sep-2003 00:45 5.0.2195.6824 236,304 Cmd.exe 02-Feb-2004 19:59 5.0.2195.6882 222,992 Gdi32.dll 02-Feb-2004 19:59 5.0.2195.6894 711,952 Kernel32.dll 02-Feb-2004 19:59 5.0.2195.6824 54,032 Mpr.dll 02-Feb-2004 19:59 5.0.2195.6895 334,608 Msgina.dll 02-Feb-2004 19:59 5.0.2195.6892 90,264 Rdpwd.sys 09-Jan-2004 01:41 5.0.2195.6888 5,854,720 Sp3res.dll 02-Feb-2004 19:59 5.0.2195.6891 380,688 User32.dll 02-Feb-2004 19:59 5.0.2195.6891 391,952 Userenv.dll 21-Jan-2004 19:48 5.0.2195.6892 1,630,256 Win32k.sys 11-Nov-2003 00:29 5.0.2195.6873 182,032 Winlogon.exe 02-Feb-2004 19:59 5.0.2195.6884 243,984 Winsrv.dll
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section of this article.
Although this memory leak problem is known to occur with MOM, other programs that generate RPC traffic may also trigger this problem. You may experience this problem after you install Windows 2000 SP4 even if MOM is not installed or otherwise implicated.
The change in the Userenv.dll file is to fix a token leak issue in the Windows 2000 SP4 Services.exe process. The leak occurs whenever a thread that is executing some of the userenv functions does not impersonate the user for some reason.
For additional information, click the following article numbers to view the articles in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/816915/ )New file naming schema for Microsoft Windows software update packages
(http://support.microsoft.com/kb/824684/ )Description of the standard terminology that is used to describe Microsoft software updates
Article ID: 835517 - Last Review: October 26, 2006 - Revision: 3.5