The Lsass.exe process uses between 50 percent and 100 percent of the processor resources when Windows Server 2000 domain users try to log on to the domain controller

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When Microsoft Windows Server 2000 domain users try to log on to the domain controller, one of the following conditions may occur:
  • The logon process takes a long time.
  • The logon process does not succeed.
When you examine the Lsass.exe process on the Processes tab in Task Manager on your domain controller, you notice that the Lsass.exe process is using between 50 percent and 100 percent of the processor resources.
This problem may occur if the following conditions are both true:
  • Many users try to log on to your Windows 2000 domain controller at the same time.
  • The users who try to log on to your Windows 2000 domain controller are members of many groups.
The logon process builds and then sorts a list of the groups that a user is a member of. If the user belongs to many groups, the logon process may take a long time to build and then sort the groups list. If many users who belong to many groups log on at the same time, the Lsass.exe process may use more processor resources than expected. The logon process may not succeed because the domain controller is busy processing Lsass.exe.

Hotfix information

A 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: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.


To install this hotfix, you must have Windows 2000 Service Pack 3 or a later version.

Restart requirement

You must restart your computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix 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   ------------------------------------------------------------   24-Mar-2004  02:17   5.0.2195.6876    388,368   Advapi32.dll   24-Mar-2004  02:17   5.0.2195.6866     69,904   Browser.dll   24-Mar-2004  02:17   5.0.2195.6824    134,928   Dnsapi.dll   24-Mar-2004  02:17   5.0.2195.6876     92,432   Dnsrslvr.dll   24-Mar-2004  02:17   5.0.2195.6883     47,888   Eventlog.dll   24-Mar-2004  02:17   5.0.2195.6890    143,632   Kdcsvc.dll   11-Mar-2004  02:37   5.0.2195.6903    210,192   Kerberos.dll   21-Sep-2003  00:32   5.0.2195.6824     71,888   Ksecdd.sys   11-Mar-2004  02:37   5.0.2195.6902    520,976   Lsasrv.dll   25-Feb-2004  23:59   5.0.2195.6902     33,552   Lsass.exe   19-Jun-2003  20:05   5.0.2195.6680    117,520   Msv1_0.dll   24-Mar-2004  02:17   5.0.2195.6897    312,592   Netapi32.dll   19-Jun-2003  20:05   5.0.2195.6695    371,984   Netlogon.dll   13-Jul-2004  02:24   5.0.2195.6944    933,648   Ntdsa.dll   24-Mar-2004  02:17   5.0.2195.6897    388,368   Samsrv.dll   24-Mar-2004  02:17   5.0.2195.6893    111,376   Scecli.dll   24-Mar-2004  02:17   5.0.2195.6903    253,200   Scesrv.dll   04-Jun-2004  23:13   5.0.2195.6935  5,887,488   Sp3res.dll   24-Mar-2004  02:17   5.0.2195.6824     50,960   W32time.dll   21-Sep-2003  00:32   5.0.2195.6824     57,104   W32tm.exe
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
816915 New naming schema for Microsoft Windows software update packages
824684 Description of the standard terminology that is used to describe Microsoft software updates
Local Security Authority Subsystem Service

Article ID: 843557 - Last Review: 10/26/2013 21:37:49 - Revision: 2.6

  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Advanced Server
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