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A user can log on to a Windows XP-based computer by using a user name and a password, even though the "Smart card is required for interactive logon" user account property is set

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Microsoft ended support for Windows XP on April 8, 2014. This change has affected your software updates and security options. Learn what this means for you and how to stay protected.

This article has been archived. It is offered "as is" and will no longer be updated.
Important This article contains information about how to modify the registry. Make sure to back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:
256986 Description of the Microsoft Windows registry
Consider the following scenario:
  • The Smart card is required for interactive logon user account property is set on a computer that is running Microsoft Windows XP.
  • The smart card is lost or damaged. The user is temporarily permitted to log on by entering a user name and a password.
  • Later, a new smart card is issued to the user. The user is again required to log on only by using a smart card.
In this scenario, the user can still log on offline with the temporary user name and password.
This problem occurs because the user name and the password are cached on the computer.

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.


To apply this hotfix, you must have Windows XP Service Pack 2 installed.

Restart requirement

You must restart the 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.
   Date         Time   Version        Size     File name   --------------------------------------------------------   30-Aug-2005  04:07  5.1.2600.2749  298,496  Kerberos.dll   25-Feb-2005  03:35       371,936  Updspapi.dll
After this hotfix is installed, the credentials are deleted when the user uses the smart card to log on online. Afterward, the user can logon offline only by using the smart card.
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.To work around this problem, follow these steps.

Note After you follow these steps, only the credentials for the most recently used account are cached. Only the most recently used account can log on offline. This workaround may not be the best solution if the computer is used by more than one user.
  1. Click Start, click Run, type regedit, and then click OK.
  2. Locate and then click the following registry subkey:
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
  3. In the right pane, right-click
    , and then click Modify.
  4. Type 1 in the Value data box, and then click OK.
  5. Quit Registry Editor.
  6. Restart the computer.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about the terminology that is used in this article, 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

Article ID: 906681 - Last Review: 01/16/2015 09:06:45 - Revision: 3.0

Microsoft Windows XP Professional, Microsoft Windows XP Home Edition

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