Article ID: 318666 - Last Review: May 14, 2007 - Revision: 1.9

Internet Explorer Maintenance Policies May Cause an Access Violation in Winlogon

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This article was previously published under Q318666

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SYMPTOMS

If Microsoft Internet Explorer maintenance policies are being applied, you may receive a "Stop C000021A" error message on a blue screen on a Windows XP-based client computer during the logon process. Or, the client computer may restart. This problem may not occur until you log on and log off several times.

You may also receive the following error message:

STOP: 0xc000021a STATUS_SYSTEM_PROCESS_TERMINATED

{Fatal System Error}

The Windows Logon Process system process terminated unexpectedly with a status of 0xaaaaaa (0xbbbbbb 0xcccccc)

The system has been shutdown.

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CAUSE

A buffer-overrun condition in the Internet Explorer Policy module may corrupt the process heap. This causes an access violation in Winlogon.exe. This problem occurs only if group policies are defined for Internet Explorer maintenance settings.

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RESOLUTION

To resolve this problem, obtain the latest service pack for Internet Explorer 6. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

328548 (http://support.microsoft.com/kb/328548/EN-US/ ) How to Obtain the Latest Internet Explorer 6 Service Pack

-or-

To resolve this problem, obtain the latest service pack for Windows XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

322389 (http://support.microsoft.com/kb/322389/EN-US/ ) How to Obtain the Latest Windows XP Service Pack

The English version of this fix should have the following file attributes or later:

   Date         Time   Version        Size     File name
   --------------------------------------------------------
   01-Mar-2002  11:39  6.00.2715.100  294,912  Iedkcs32.dll

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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Internet Explorer version 6 Service Pack (SP) 1 and Windows XP SInternet Explorer version 6.

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