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
SYMPTOMS
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.
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:
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
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 6.1.22.4 371,936 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.
WORKAROUND
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.
- Click Start, click Run, type regedit, and then click OK.
- Locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
- In the right pane, right-click cachedlogonscount, and then click Modify.
- Type 1 in the Value data box, and then click OK.
- Quit Registry Editor.
- Restart the computer.