You receive "The system could not log you on" error message when you use a smart card to log on to a Windows XP Professional-based computer

When you use a smart card to log on to a Microsoft Windows XP Professional-based computer, you do not log on to the network and you receive the following error message:

This problem may occur when the user name portion of the your User Principal Name (RFC822 name) does not match your downlevel logon name (sAMAccountName).

For example, if you log on with the following attributes, you will not experience the problem:However, if you log on with the following attributes after you install Windows XP SP2, you will experience the problem:Note This problem may not occur until after you install Windows XP Service Pack 2 (SP2).

Hotfix information

Prerequisites

There are no prerequisites to install this hotfix.

Restart information

You do not have to restart your computer after you apply this hotfix.

Hotfix replacement information

This hotfix is not replaced by any later hotfix.

Registry information

You do not have to create or modify any registry keys to enable any hotfixes that this package contains.

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 item in Control Panel.

Windows XP Service Pack 1

Windows XP Service Pack 2

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

For additional information, click the following article number to view the article in the Microsoft Knowledge Base: