Microsoft KB Archive/888612

= FIX: Exchange servers fail Kerberos authentication server requests on Windows 2000-based servers =

Article ID: 888612

Article Last Modified on 8/7/2006

-

APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Professional Edition
 * Microsoft Windows 2000 Advanced Server

-





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: $

User ID:

Service Name: krbtgt/

Pre-Authentication Type: 0x2

Failure Code: 0x18

Client 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.



CAUSE
This problem occurs because there is a problem in Windows 2000.



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.



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



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

Keywords: kbbug kbfix kbhotfixserver kbqfe kbwin2000presp5fix kbpubtypekc KB888612

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.