The network provider may not function as expected on your Windows XP-based computer (885423)


The information in this article applies to:

  • Microsoft Windows XP Professional
  • Microsoft Windows XP Home Edition
  • Microsoft Windows XP 64-Bit Edition Version 2002
  • Microsoft Windows XP 64-Bit Edition Version 2003

SYMPTOMS

When you manually log on to your Microsoft Windows XP-based computer with a user name and a password, the Winlogon.exe process may prematurely end the Mpnotify.exe process. The Mpnotify.exe process hosts network provider .dll files. Specifically, the Mpnotify.exe process calls the NPLogonNotify function of the network provider .dll file. Therefore, the network provider may not function as expected.

CAUSE

This problem may occur if the following conditions are true:
  • You have a smart card reader attached to the workstation.
  • The Winlogon.exe process detects the smart card reader in the background during the logon process.
The Winlogon.exe process incorrectly ends the Mpnotify.exe process when any secure attention sequence (SAS) events are detected in the background.

RESOLUTION

Hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows XP service pack that contains this hotfix.

To resolve this problem immediately, 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

There are no prerequisites.

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 tool in Control Panel.

Windows XP, 32-bit editions

Windows XP Service Pack 1
    Date         Time   Version       Size     File name
   --------------------------------------------------------
   29-Sep-2004  16:00  5.1.2600.1596  398,848  Licdll.dll       
   29-Sep-2004  05:58  5.1.2600.1596  483,328  Winlogon.exe
Windows XP Service Pack 2
   Date         Time   Version        Size     File name
   --------------------------------------------------------
   29-Sep-2004  16:05  5.1.2600.2524  423,936  Licdll.dll       
   29-Sep-2004  15:56  5.1.2600.2524  502,784  Winlogon.exe

Windows XP, 64-bit editions

   Date         Time   Version        Size     File name
   --------------------------------------------------------
   29-Sep-2004  02:14  5.1.2600.1596  649,216  Winlogon.exe

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

MORE INFORMATION

A SAS is a key sequence that begins the process of logging on or off of a computer. By default, this sequence is CTRL+ALT+DEL.

After you install this hotfix, the Winlogon.exe process will not incorrectly end the Mpnotify.exe process when smart card SAS events are detected.

For additional information about Microsoft software updates, 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

Modification Type:MinorLast Reviewed:6/1/2006
Keywords:kbQFE kbHotfixServer kbWinXPpreSP3fix kbfix kbbug KB885423 kbAudITPRO kbAudDeveloper
©2004 Microsoft Corporation. All rights reserved.