A hotfix is available that enables certificate mapping by using the common name (CN) of only the "Subject" field in Windows Server 2008

Windows Server 2008 handles the certificate mapping by using the common name (CN) of the "Issuer" field of a certificate. This behavior is by design and could not be changed by a user.

This hotfix introduces a new feature for Windows Server 2008. The new feature enables Windows Server 2008 to handle the certificate mapping by using the CN of only the "Subject" field. The new feature is added in the authentication module in Windows Server 2008.

You must install this hotfix on all domain controllers. After you install this hotfix, you must follow these steps on one of the domain controllers to enable this feature for one or more users:

1. On the domain controller, open the "Active Directory Users and Computers" snap-in.
2. In the "Active Directory Users and Computers" window, click Advanced Features on the View menu.
3. Expand DomainName, and then click Users.
   Note DomainName represents the fully qualified domain name (FQDN) of the domain.
4. Double-click a user to enable this feature for that user.
5. In the Properties dialog box, click the Attribute Editor tab.
6. On the Attribute Editor tab, double-click the altSecurityIdentities attribute.
7. In the Multi-valued String Editor dialog box, type the following value under Value to add, and then click Add: X509N:<S>CN=CertificateSubjectName
   Note CertificateSubjectName represents the CN of the "Subject" field of the user certificate.
8. Click OK two times.
9. Repeat step 4 through step 8 as required if you want to enable this feature for other users.

Important Windows Vista and Windows Server 2008 hotfixes are included in the same packages. However, only one of these products may be listed on the “Hotfix Request” page. To request the hotfix package that applies to both Windows Vista and Windows Server 2008, just select the product that is listed on the page.

Prerequisites

To apply this hotfix, the computer must be running one of the following operating systems:

• Windows Server 2008
• Windows Server 2008 Service Pack 2 (SP2)

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfix.

File information

The global version of this hotfix has the file attributes (or later file attributes) that are listed in the following table.

Windows Server 2008 file information note

• The files that apply to a specific product, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.
  Collapse this tableExpand this table

  Version	Product	SR_Level	Service branch
  6.0.600 1 . 18xxx	Windows Server 2008	SP1	GDR
  6.0.600 1 . 22xxx	Windows Server 2008	SP1	LDR
  6.0.600 2 . 18xxx	Windows Server 2008	SP2	GDR
  6.0.600 2 . 22xxx	Windows Server 2008	SP2	LDR

• Service Pack 1 is integrated into the original release of Windows Server 2008.
• The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately. MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. The security catalog files (attributes not listed) are signed with a Microsoft digital signature.

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.

For all supported x86-based versions of Windows Server 2008

For all supported x64-based versions of Windows Server 2008

For all supported Itanium-based versions of Windows Server 2008

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base: -

Additional file information for Windows Server 2008

Additional files for all supported x86-based versions of Windows Server 2008

Additional files for all supported x64-based versions of Windows Server 2008

Additional files for all supported Itanium-based versions of Windows Server 2008