Microsoft KB Archive/814569

= Unsuccessful Authentication Causes a Memory Leak in the Kerberos Component of Lsass.exe =

Article ID: 814569

Article Last Modified on 2/22/2007

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APPLIES TO


 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Service Pack 3
 * Microsoft Windows 2000 Service Pack 2
 * Microsoft Windows 2000 Service Pack 1
 * Microsoft Windows 2000 Service Pack 3
 * Microsoft Windows 2000 Service Pack 2
 * Microsoft Windows 2000 Service Pack 1

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SYMPTOMS
Private Lsass.exe bytes on a client computer may be leaking. When this occurs, you see private bytes increase steadily over time. You also see that the value in the VM Size column in Task Manager increases each time that access is denied when you try to connect to a remote print server or to view the resources on a remote server.



CAUSE
The leak occurs because resources are not released when Kerberos authentication does not succeed. Authentication might not succeed if the client computer's time and the server's time are not synchronized with the domain controller.



Service Pack Information
To resolve this problem, obtain the latest service pack for Microsoft Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack

Hotfix Information
A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem. This fix may receive additional testing. 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 hotfix.

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, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The typical 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 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   Size           Version  File name 16-Feb-2003 13:30  5.0.2195.6613  124,176  Adsldp.dll 16-Feb-2003 13:30  5.0.2195.6601  130,832  Adsldpc.dll 24-Feb-2003 13:15  5.0.2195.6667   62,736  Adsmsext.dll 16-Feb-2003 13:30  5.0.2195.6660  377,616  Advapi32.dll 16-Feb-2003 13:30  5.0.2195.6611   49,936  Browser.dll 16-Feb-2003 13:30  5.0.2195.6663  135,952  Dnsapi.dll 16-Feb-2003 13:30  5.0.2195.6663   96,528  Dnsrslvr.dll 16-Feb-2003 13:30  5.0.2195.6661   46,352  Eventlog.dll 16-Feb-2003 13:30  5.0.2195.6627  148,240  Kdcsvc.dll 20-Feb-2003 13:11  5.0.2195.6666  204,560  Kerberos.dll 02-Dec-2002 16:09  5.0.2195.6621   71,888  Ksecdd.sys 24-Jan-2003 11:40  5.0.2195.6659  509,712  Lsasrv.dll 24-Jan-2003 11:41  5.0.2195.6659   33,552  Lsass.exe 05-Feb-2003 05:59  5.0.2195.6662  109,328  Msv1_0.dll 16-Feb-2003 13:30  5.0.2195.6601  312,592  Netapi32.dll 16-Feb-2003 13:30  5.0.2195.6627  360,720  Netlogon.dll 24-Feb-2003 13:15  5.0.2195.6669  929,552  Ntdsa.dll 24-Feb-2003 13:15  5.0.2195.6666  392,464  Samsrv.dll 16-Feb-2003 13:30  5.0.2195.6622  112,912  Scecli.dll 16-Feb-2003 13:30  5.0.2195.6625  305,936  Scesrv.dll 10-Feb-2003 12:22  5.0.2195.6663  166,912  Sp3res.dll 16-Feb-2003 13:30  5.0.2195.6601   51,472  W32time.dll 16-Aug-2002 02:32  5.0.2195.6601   57,104  W32tm.exe 24-Feb-2003 13:15  5.0.2195.6666  125,200  Wldap32.dll



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Microsoft Windows 2000 Service Pack 4.



MORE INFORMATION
To troubleshoot a scenario under which the leak may occur, create a batch file that repeatedly runs a &quot;net view&quot; command against the server. The &quot;net view&quot; commands do not succeed and generate &quot;Access denied&quot; messages. The value of the VM Size column in Task Manager steadily increases; more than 10 megabytes (MB) may leak in 10 minutes.

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:

265173 The Datacenter Program and Windows 2000 Datacenter Server Product

Keywords: kbbug kbfix kbwin2000presp4fix kbqfe kbsecurity kbwin2ksp4fix kbhotfixserver KB814569

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