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On a Windows XP Service Pack 2 (SP2)-based computer that is running the Windows Server 2003 Administration Tools Pack, you map a certificate to the corresponding Active Directory directory service user account in the domain. However, certificate mapping fails. The corresponding user account may receive authentication errors when the user tries to use the certificate to obtain authentication in applications that use Active Directory certificate mapping.
For example, when a certificate is mapped to an Active Directory user account from a Windows XP-based computer, you cannot use this certificate to log on to the domain through Microsoft Internet Security and Accleration (ISA) Server.
This problem occurs because the string that is used for the altSecurityIdentities property in Active Directory is inconsistent when a certificate is mapped to a user account from a Windows XP SP2-based client computer.
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.
There are no prerequisites.
You do not need to restart the computer after you apply this hotfix.
Hotfix replacement information
This hotfix does not replace any other hotfixes.
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 with SP2, x86-based versions
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about user security attributes and about the altSecurityIdentities property, visit the following Microsoft Web page: