FIX: Exchange servers fail Kerberos authentication server requests on Windows 2000-based servers (888612)

SYMPTOMS

On Microsoft Windows 2000-based servers, Exchange servers fail Kerberos authentication server requests when the computer account password is changed against Kerberos Key Distribution Centers (KDCs) in the network environment. Kerberos authentication server requests are also known as KRB_AS_REQ messages. The following Event message appears in the Security log on domain controllers:Event Source: Security
Event Category: Account Logon
Event ID: 675
Description:
Pre-authentication failed:
User Name: <ExchangeServer>$
User ID: <user sid>
Service Name: krbtgt/<domain>
Pre-Authentication Type: 0x2
Failure Code: 0x18
Client Address: <ip address>This scenario can also cause unnecessary traffic on the domain controllers and delays on the mail servers. Additionally, user passwords are automatically changed every 30 days by default.

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:

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

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 file attributes) 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 item in Control Panel.

File name	File version	File size	Date	Time	Platform
Advapi32.dll	5.0.2195.6876	388,368	24-Mar-2004	02:17	x86
Browser.dll	5.0.2195.6866	69,904	24-Mar-2004	02:17	x86
Dnsapi.dll	5.0.2195.6824	134,928	24-Mar-2004	02:17	x86
Dnsrslvr.dll	5.0.2195.6876	92,432	24-Mar-2004	02:17	x86
Eventlog.dll	5.0.2195.6883	47,888	24-Mar-2004	02:17	x86
Kdcsvc.dll	5.0.2195.6890	143,632	24-Mar-2004	02:17	x86
Kerberos.dll	5.0.2195.7024	206,608	25-Jan-2005	07:59	x86
Ksecdd.sys	5.0.2195.6824	71,888	21-Sep-2003	00:32	x86
Lsasrv.dll	5.0.2195.6987	513,296	15-Oct-2004	18:16	x86
Lsass.exe	5.0.2195.6902	33,552	25-Feb-2004	23:59	x86
Msv1_0.dll	5.0.2195.6897	123,152	11-Mar-2004	02:37	x86
Netapi32.dll	5.0.2195.6949	309,008	10-Jun-2004	16:58	x86
Netlogon.dll	5.0.2195.6891	371,472	24-Mar-2004	02:17	x86
Ntdsa.dll	5.0.2195.6896	1,028,880	24-Mar-2004	02:17	x86
Samsrv.dll	5.0.2195.6897	388,368	24-Mar-2004	02:17	x86
Scecli.dll	5.0.2195.6893	111,376	24-Mar-2004	02:17	x86
Scesrv.dll	5.0.2195.6903	253,200	24-Mar-2004	02:17	x86
Sp3res.dll	5.0.2195.7017	6,278,656	06-Jan-2005	04:29	x86
W32time.dll	5.0.2195.6824	50,960	24-Mar-2004	02:17	x86
W32tm.exe	5.0.2195.6824	57,104	21-Sep-2003	00:32	x86

MORE INFORMATION

For more information about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base:

816915 New file naming schema for Microsoft Windows software update packages

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates