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Article ID: 2769121 - Last Review: November 14, 2012 - Revision: 2.0

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Symptoms

Consider the following scenario:
  • You have two Active Directory forests (forest A and forest B) that require 802.1X authentication for both wired and wireless connections.
  • You establish a forest trust between the two forests.
  • You have a Windows 7-based or Windows Server 2008 R2-based computer in forest A. The certificate store of the computer contains the following certificates:
    • An 802.1X authentication certificate that contains a Subject Alternative Name (SAN) field and complies with the Extensible Authentication Protocol-Transport Layer Security (EAP -TLS) requirement.
    • A certificate that has a different usage and does not contain a SAN field. For example, a CA-HIPS certificate for a Host-based Intrusion Prevention System (HIPS) application.
  • You migrate the computer from forest A to forest B.
In this scenario, 802.1X authentication for the computer fails.

Cause

This issue occurs because the computer certificate selection logic is incorrect.

Resolution

Hotfix information

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 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 website:
http://support.microsoft.com/contactus/?ws=support (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.

Prerequisites

To apply this hotfix, you must be running one of the following operating systems:
  • Windows 7
  • Windows 7 Service Pack 1 (SP1)
  • Windows Server 2008 R2
  • Windows Server 2008 R2 Service Pack 1 (SP1)
For more information about how to obtain a Windows 7 or Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
976932  (http://support.microsoft.com/kb/976932/ ) Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

To apply this hotfix, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.
Windows 7 and Windows Server 2008 R2 file information notes
Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.
  • The files that apply to a specific product, milestone (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
    VersionProductMilestoneService branch
    6.1.760 0.21xxxWindows 7 and Windows Server 2008 R2RTMLDR
    6.1.760 1.21xxxWindows 7 and Windows Server 2008 R2SP1LDR
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows 7 and for Windows Server 2008 R2" section. 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, for which the attributes are not listed, are signed with a Microsoft digital signature.
For all supported x86-based versions of Windows 7
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Rastls.dll6.1.7600.21342372,73612-Oct-201217:27x86
Rastls.dll6.1.7601.22133372,73612-Oct-201217:19x86
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Rastls.dll6.1.7600.21342424,96012-Oct-201218:22x64
Rastls.dll6.1.7601.22133424,96012-Oct-201217:54x64

Status

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

More information

For more information about the certificate requirements for PEAP and EAP, go to the following Microsoft website:
General information about the certificate requirements for PEAP and EAP (http://technet.microsoft.com/en-us/library/cc731363(v=WS.10).aspx)
For more information about how to request a certificate that has a custom Subject Alternative Name, go to the following Microsoft website:
General information about how to request a certificate that has a custom Subject Alternative Name (http://technet.microsoft.com/en-us/library/ff625722(v=WS.10).aspx)
For 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 updates

Additional file information

Additional file information for Windows 7 and for Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7
Collapse this tableExpand this table
File nameX86_b07a38493bc263b016050290ae7b8e5a_31bf3856ad364e35_6.1.7601.22133_none_e6bb1658ff2174b9.manifest
File versionNot applicable
File size694
Date (UTC)15-Oct-2012
Time (UTC)07:33
PlatformNot applicable
File nameX86_fa992b29493da96045ecc16db82bd48b_31bf3856ad364e35_6.1.7600.21342_none_bdfd59e150ba5658.manifest
File versionNot applicable
File size694
Date (UTC)15-Oct-2012
Time (UTC)07:33
PlatformNot applicable
File nameX86_microsoft-windows-rastls_31bf3856ad364e35_6.1.7600.21342_none_6ced4500ca777639.manifest
File versionNot applicable
File size4,741
Date (UTC)12-Oct-2012
Time (UTC)18:41
PlatformNot applicable
File nameX86_microsoft-windows-rastls_31bf3856ad364e35_6.1.7601.22133_none_6edf723cc794df8b.manifest
File versionNot applicable
File size4,741
Date (UTC)12-Oct-2012
Time (UTC)23:39
PlatformNot applicable
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameAmd64_8ab68211775625833765dd7780ddec31_31bf3856ad364e35_6.1.7600.21342_none_eddfdc501a535400.manifest
File versionNot applicable
File size698
Date (UTC)15-Oct-2012
Time (UTC)07:33
PlatformNot applicable
File nameAmd64_c7430c46d50144d81efd60f6013f3780_31bf3856ad364e35_6.1.7601.22133_none_b6f6d0a0a5432073.manifest
File versionNot applicable
File size1,036
Date (UTC)15-Oct-2012
Time (UTC)07:33
PlatformNot applicable
File nameAmd64_d8090724a5a20c631ff08243a7add596_31bf3856ad364e35_6.1.7600.21342_none_730856178bc75453.manifest
File versionNot applicable
File size1,036
Date (UTC)15-Oct-2012
Time (UTC)07:33
PlatformNot applicable
File nameAmd64_fc060cfa99efe393348b1885956a0253_31bf3856ad364e35_6.1.7601.22133_none_eac845cc88817033.manifest
File versionNot applicable
File size698
Date (UTC)15-Oct-2012
Time (UTC)07:33
PlatformNot applicable
File nameAmd64_microsoft-windows-rastls_31bf3856ad364e35_6.1.7600.21342_none_c90be08482d4e76f.manifest
File versionNot applicable
File size4,745
Date (UTC)12-Oct-2012
Time (UTC)19:01
PlatformNot applicable
File nameAmd64_microsoft-windows-rastls_31bf3856ad364e35_6.1.7601.22133_none_cafe0dc07ff250c1.manifest
File versionNot applicable
File size4,745
Date (UTC)13-Oct-2012
Time (UTC)00:44
PlatformNot applicable

Applies to
  • Windows 7 Service Pack 1
  • Windows 7 Enterprise
  • Windows 7 Home Basic
  • Windows 7 Home Premium
  • Windows 7 Professional
  • Windows 7 Starter
  • Windows 7 Ultimate
  • Windows Server 2008 R2 Service Pack 1
  • Windows Server 2008 R2 Datacenter
  • Windows Server 2008 R2 Enterprise
  • Windows Server 2008 R2 Standard
  • Windows Server 2008 R2 for Itanium-Based Systems
  • Windows Server 2008 R2 Foundation
  • Windows Web Server 2008 R2
Keywords: 
kbqfe kbsurveynew kbexpertiseadvanced kbhotfixserver kbfix kbautohotfix KB2769121
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