Computer account expiration may cause authentication problems in Windows 2000 (820325)


The information in this article applies to:

  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Professional
  • Microsoft Windows 2000 Advanced Server
IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry

SYMPTOMS

The Microsoft Exchange Routing Engine service (also known as RESVC) cannot connect to the routing group master server. When this problem occurs, you may receive information similar to the following in the Netlogon.log file on the member server that is running Microsoft Exchange Server:
Date and Time [LOGON] SamLogon: Network logon of Domain\Servername from Servername Entered
Date and Time [ENCRYPT] NlpSignOrSeal: 0.2: Session Key: e6f86bb9 56da25b8 05f71cb2 640be6ae .k...%.V.......d
Date and Time [ENCRYPT] NlpSignOrSeal: 0.2: IV: a7864a74 f8c6c1aa tJ......
Date and Time [ENCRYPT] NlpSignOrSeal: 0.2: Clear Seq: 1a000000 00000080 ........
Date and Time [ENCRYPT] NlpSignOrSeal: 0.2: Encrypted Seq: 7ae62cc4 7c3f7bfc .,.z.{?|
Date and Time [SESSION] SealMessage: 0.2: returns 0x0
Date and Time [ENCRYPT] NlpVerifyOrUnseal: 0.2: Session Key: e6f86bb9 56da25b8 05f71cb2 640be6ae .k...%.V.......d
Date and Time [ENCRYPT] NlpVerifyOrUnseal: 0.2: IV: a46734ea 0a38dcf5 .4g...8.
Date and Time [ENCRYPT] NlpVerifyOrUnseal: 0.2: Encrypted Seq: eed44f03 c2cae4df .O......
Date and Time [ENCRYPT] NlpVerifyOrUnseal: 0.2: Clear Seq: 1b000000 00000000 ........
Date and Time [ENCRYPT] NlpVerifyOrUnseal: 0.2: First Several of signature: 007a0077 0000ffff w.z.....
Date and Time [SESSION] UnsealMessage: 0.2: returns 0x0
Date and Time [SESSION] NlpUserValidateHigher: Seed = 4372af8e 537652e5 ..rC.RvS
Date and Time [SESSION] NlpUserValidateHigher: SessionKey = e6f86bb9 56da25b8 05f71cb2 640be6ae .k...%.V.......d
Date and Time [LOGON] SamLogon: Network logon of Domain\Servername from Servername Returns 0xC0000071

CAUSE

This problem may occur if the computer account password has expired. The password may expire if the DisablePasswordChange registry entry has been changed to 1 (the default setting is 0). Exchange Server connects using the computer account for authentication, and several services (such as the Microsoft Exchange Routing Engine service) use the computer account for authentication. For additional information about the effects of computer account replication on a domain, click the following article number to view the article in the Microsoft Knowledge Base:

175468 Effects of Machine Account Replication on a Domain

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.

Installation information

For this hotfix to work correctly, you must apply it to all the domain controllers in the domain.

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 fix 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
   --------------------------------------------------------------
   08-May-2003  11:07  5.0.2195.6613     125,712  Adsldp.dll
   08-May-2003  11:07  5.0.2195.6701     131,344  Adsldpc.dll
   08-May-2003  11:07  5.0.2195.6667      62,736  Adsmsext.dll
   08-May-2003  11:07  5.0.2195.6702     381,200  Advapi32.dll
   08-May-2003  11:07  5.0.2195.6693      68,880  Browser.dll
   08-May-2003  11:07  5.0.2195.6680     134,928  Dnsapi.dll
   08-May-2003  11:07  5.0.2195.6663      92,432  Dnsrslvr.dll
   08-May-2003  11:07  5.0.2195.6700      47,376  Eventlog.dll
   08-May-2003  11:07  5.0.2195.6627     148,240  Kdcsvc.dll
   04-Apr-2003  17:11  5.0.2195.6666     212,752  Kerberos.dll
   26-Mar-2003  14:37  5.0.2195.6695      71,888  Ksecdd.sys
   08-May-2003  11:07  5.0.2195.6695     518,928  Lsasrv.dll
   08-May-2003  11:07  5.0.2195.6695      33,552  Lsass.exe
   04-Apr-2003  17:12  5.0.2195.6680     117,520  Msv1_0.dll
   08-May-2003  11:07  5.0.2195.6601     311,568  Netapi32.dll
   08-May-2003  11:07  5.0.2195.6695     371,984  Netlogon.dll
   08-May-2003  11:07  5.0.2195.6697   1,040,144  Ntdsa.dll
   08-May-2003  11:07  5.0.2195.6742     392,464  Samsrv.dll
   08-May-2003  11:07  5.0.2195.6737     131,344  Scecli.dll
   08-May-2003  11:07  5.0.2195.6737     306,448  Scesrv.dll
   24-Apr-2003  12:49  5.0.2195.6737     359,936  Sp3res.dll
   08-May-2003  11:07  5.0.2195.6601      57,616  W32time.dll
   08-May-2003  11:07  5.0.2195.6601      63,248  W32tm.exe
   08-May-2003  11:07  5.0.2195.6741     126,224  Wldap32.dll

WORKAROUND

WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
To work around this problem, change the DisablePasswordChange registry entry to 0 on the member server computer that is running Exchange Server:
  1. Click Start, click Run, type Regedit in the Open box, and then click OK.
  2. Locate and then click the following registry key:

    HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\NetLogon\Parameters

  3. Back up the registry key:
    1. On the Registry menu, click Export Registry File.
    2. In the File name box, type a name for the backup file, and then click Save.
  4. Double-click the DisablePasswordChange registry entry.
  5. Change the value in the Value Data box to 0.
  6. Click OK.
  7. Quit Registry Editor.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning 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

Modification Type:MinorLast Reviewed:10/28/2005
Keywords:kbHotfixServer kbQFE kbBug kbfix kbQFE kbWin2000preSP5fix KB820325 kbAudITPRO
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