Article ID: 822554
Article Last Modified on 10/26/2006
APPLIES TO
- Microsoft Windows 2000 Server
- Microsoft Windows 2000 Advanced Server
SYMPTOMS
The performance of a Microsoft Windows 2000-based domain controller may decrease significantly, response times to service principal name (SPN) queries may become longer that expected, and Lsass.exe may peak at 100-percent CPU use.
CAUSE
This behavior occurs when the domain controller receives many Kerberos ticket-granting service (TGS) requests for an SPN that is a subset of a common value. A typical example is the case of the names of all client computers in a domain having the same prefix as the name of the domain where they are members. They register an SPN of the following:
HOST/DomainName
Suffix
If a Kerberos TGS request for HOST/DomainName
is issued against a domain controller, a query that uses "HOST/DomainName*
" is performed instead of a query that uses the exact match of "HOST/DomainName
". This problem may occur in environments with many workstations, where this naming convention is in use.
RESOLUTION
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:
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
No prerequisites are required.
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 ----------------------------------------------------------- 11-Aug-2003 09:04 5.0.2195.6748 124,688 Adsldp.dll 11-Aug-2003 09:04 5.0.2195.6748 132,368 Adsldpc.dll 11-Aug-2003 09:04 5.0.2195.6748 63,760 Adsmsext.dll 11-Aug-2003 09:04 5.0.2195.6800 381,712 Advapi32.dll 11-Aug-2003 09:04 5.0.2195.6753 69,392 Browser.dll 11-Aug-2003 09:04 5.0.2195.6680 134,928 Dnsapi.dll 11-Aug-2003 09:04 5.0.2195.6780 96,528 Dnsrslvr.dll 11-Aug-2003 09:04 5.0.2195.6753 47,376 Eventlog.dll 11-Aug-2003 09:04 5.0.2195.6759 148,240 Kdcsvc.dll 18-Jun-2003 09:43 5.0.2195.6758 205,072 Kerberos.dll 26-Mar-2003 13:37 5.0.2195.6695 71,888 Ksecdd.sys 01-Aug-2003 09:40 5.0.2195.6797 509,712 Lsasrv.dll 01-Aug-2003 09:40 5.0.2195.6797 33,552 Lsass.exe 17-Jul-2003 15:13 5.0.2195.6786 109,840 Msv1_0.dll 11-Aug-2003 09:04 5.0.2195.6601 311,568 Netapi32.dll 11-Aug-2003 09:04 5.0.2195.6791 361,232 Netlogon.dll 11-Aug-2003 09:04 5.0.2195.6801 931,600 Ntdsa.dll 11-Aug-2003 09:04 5.0.2195.6742 392,464 Samsrv.dll 11-Aug-2003 09:04 5.0.2195.6737 131,344 Scecli.dll 11-Aug-2003 09:04 5.0.2195.6737 306,448 Scesrv.dll 15-Jul-2003 14:08 5.0.2195.6776 4,858,368 Sp3res.dll 11-Aug-2003 09:04 5.0.2195.6601 51,472 W32time.dll 16-Aug-2002 05:32 5.0.2195.6601 57,104 W32tm.exe 11-Aug-2003 09:04 5.0.2195.6741 126,224 Wldap32.dll
WORKAROUND
To work around this problem, add the SPN that is being requested to an arbitrary computer account. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
157234 HOWTO: Deal with localized and renamed user and group names
STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section of this article.
MORE INFORMATION
For additional information about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base:
816915 New naming schema for Microsoft Windows hotfix packages
Additional query words: ServicePrincipalName
Keywords: kbhotfixserver kbqfe kbwin2000presp5fix kbqfe kbfix kbbug KB822554