Microsoft KB Archive/843557

= 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 =

Article ID: 843557

Article Last Modified on 10/26/2006

-

APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server

-





SYMPTOMS
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.



CAUSE
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 now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone 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 usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
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



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

