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You cannot use a smart card certificate to log on to a domain from a Windows Vista-based client computerArticle ID: 959887 - View products that this article applies to. On This PageSYMPTOMSIn a Windows 2008-based domain that is using the Active
Directory directory service, you enable a client computer to use smart card
authentication to log on to the domain. However, when you try to log on to the
domain from a Windows Vista-based client computer, the logon process may fail,
and you may receive the following error message: No valid
certificates found. Check that the card is inserted Your credentials could not be
verified. CAUSEThe issue occurs because the Kerberos Key Distribution
Center (KDC) does not accept the client authentication EKU as
expected. During the client-side certificate verification, the KDC server checks the client EKU. If the client authentication EKU is neither the Microsoft smart card EKU nor the Public Key Cryptography for the Initial Authentication (PKINIT) client Authentication EKU, as defined in the PKINIT RFC 4556, authentication fails. RESOLUTIONHotfix informationA 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 the problem described in this article. 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: http://support.microsoft.com/contactus/?ws=support 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.
(http://support.microsoft.com/contactus/?ws=support)
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. PrerequisitesTo apply this hotfix, install the hotfix on the Windows Server 2008-based KDC server to resolve this problem.Note The hotfix that is described by this Microsoft Knowledge Base article only fixes the server side. You must also install the hotfix that is described in 955558 on the client computer. Restart requirementYou have to restart the computer after you apply this hotfix.Hotfix replacement informationThis hotfix does not replace any other previously released hotfixes.File informationThe 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 Vista and Windows Server 2008 file information notesThe MANIFEST files (.manifest) and MUM files (.mum) installed for each environment are listed separately. MUM and MANIFEST files, and the associated security catalog (.cat) files, are important to maintaining the state of the updated component. The security catalog files (attributes not listed) are signed with a Microsoft digital signature.For all supported x86-based versions of Windows Server 2008Collapse this table
For all supported x64-based versions of Windows Server 2008Collapse this table
STATUSMicrosoft
has confirmed that this is a problem in the Microsoft products that are listed
in the "Applies to" section. REFERENCES For more information, click the following article numbers to view
the articles in the Microsoft Knowledge Base: 291010
(http://support.microsoft.com/kb/291010/
)
Requirements for domain controller certificates from a third-party CA
955558
(http://support.microsoft.com/kb/955558/
)
You cannot use a smart card certificate to log on to a domain from a Windows Vista-based or a Windows Server 2008-based client computer
MORE INFORMATIONFor more information about
software update terminology, click the following article number to view the
article in the Microsoft Knowledge Base: 824684
(http://support.microsoft.com/kb/824684/
)
Description of the standard terminology that is used to describe Microsoft software updatesAdditional file information for Windows Server 2008Additional files for all supported x86-based versions of Windows Server 2008Collapse this table
Additional files for all supported x64-based versions of Windows Server 2008Collapse this table
PropertiesArticle ID: 959887 - Last Review: October 8, 2011 - Revision: 3.0 APPLIES TO
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