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Article ID: 981374 - Last Review: June 8, 2011 - Revision: 4.1

Support for Windows Vista Service Pack 1 (SP1) ends on July 12, 2011. To continue receiving security updates for Windows, make sure you're running Windows Vista with Service Pack 2 (SP2). For more information, refer to this Microsoft web page: Support is ending for some versions of Windows (http://windows.microsoft.com/en-us/windows/help/end-support-windows-xp-sp2-windows-vista-without-service-packs) .

INTRODUCTION

Microsoft has released a Microsoft security advisory about this issue for IT professionals. The security advisory contains additional security-related information. To view the security advisory, visit the following Microsoft Web site:
http://www.microsoft.com/technet/security/advisory/981374.mspx (http://www.microsoft.com/technet/security/advisory/981374.mspx)

MORE INFORMATION

Two Fix it solutions are available:
  • Fix it solution for peer factory in iepeers.dll We have created an application compatibility database that will disable peer factory in the iepeers.dll binary for supported versions of Internet Explorer on Windows XP and Windows Server 2003.
    To install this application compatibility database, click the Fix it button in the "Fix it solution for peer factory in iepeers.dll" section.
  • Fix it solution for Data Execution Prevention We have created an application compatibility database that will enable Data Execution Prevention (DEP) for all versions of Internet Explorer that support DEP. You do not need this database if you are using Internet Explorer 8 on Windows XP Service Pack 3 (SP3) or on Windows Vista SP1 or later versions. This is because Internet Explorer 8 opts-in to DEP by default on these platforms.
    To install this application compatibility database, click the Fix it button in the "Fix it solution for Data Execution Prevention" section.

Fix it solution for peer factory in iepeers.dll

To apply the "Disable peer factory in iepeers.dll" automatically to supported versions of Windows XP and Windows Server 2003, click the Fix it button or link. Click Run in the File Download dialog box, and then follow the steps in the Fix it wizard.

To undo the fix and restore the original settings, click the Fix this problem link under the "Disable this fix" heading. Then, click Run in the File Download dialog box and follow the steps in the wizard.
Collapse this tableExpand this table
Enable this fixDisable this fix
Fix this problem
Microsoft Fix it 50386
Fix this problem
Microsoft Fix it 50387

Notes
  • This wizard may be in English only. However, the automatic fix also works for other language versions of Windows.
  • If you are not on the computer that has the problem, you can save the automatic fix to a flash drive or to a CD, and then you can run it on the computer that has the problem.

Fix it solution for Data Execution Prevention

To enable or disable DEP automatically, click the Fix it button or link. Click Run in the File Download dialog box, and then follow the steps in the Fix it wizard.
Collapse this tableExpand this table
Enable Application Compatibility DatabaseDisable Application Compatibility Database
Fix this problem
Microsoft Fix it 50285
Fix this problem
Microsoft Fix it 50286
Notes
  • These wizards may be in English only. However, the automatic fixes also work for other language versions of Windows.
  • If you are not on the computer that has the problem, save the Fix it solutions to a flash drive or a CD and then run it on the computer that has the problem.
  • These wizards do not apply to Windows 2000-based operating systems because Windows 2000 does not support DEP.
  • For this workaround to be effective, your processor must support Hardware-enforced DEP. For more information about how to determine whether your system supports Hardware-enforced DEP click the following article number to view the article in the Microsoft Knowledge Base:
    912923  (http://support.microsoft.com/kb/912923/ ) How to determine that hardware DEP is available and configured on your computer
Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use (http://go.microsoft.com/fwlink/?LinkId=151500) for other considerations.

APPLIES TO
  • Windows Internet Explorer 7, when used with:
    • Windows Server 2008 for Itanium-Based Systems
    • Windows Server 2008 Datacenter
    • Windows Server 2008 Enterprise
    • Windows Server 2008 Standard
    • Windows Web Server 2008
    • Windows Vista Business
    • Windows Vista Enterprise
    • Windows Vista Home Basic
    • Windows Vista Home Premium
    • Windows Vista Ultimate
    • Windows Vista Enterprise 64-bit Edition
    • Windows Vista Home Basic 64-bit Edition
    • Windows Vista Home Premium 64-bit Edition
    • Windows Vista Ultimate 64-bit Edition
    • Windows Vista Business 64-bit Edition
    • Microsoft Windows XP Professional
    • Microsoft Windows XP Home Edition
    • Microsoft Windows XP Professional x64 Edition
    • Microsoft Windows Server 2003, Datacenter x64 Edition
    • Microsoft Windows Server 2003, Enterprise x64 Edition
    • Microsoft Windows Server 2003, Standard x64 Edition
    • Microsoft Windows Server 2003, Web Edition
    • Microsoft Windows Server 2003, Standard Edition (32-bit x86)
    • Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
    • Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
    • Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems
    • Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems
  • Microsoft Internet Explorer 6.0, when used with:
    • Microsoft Windows XP Professional
    • Microsoft Windows XP Home Edition
    • Microsoft Windows XP Professional x64 Edition
    • Microsoft Windows Server 2003, Datacenter x64 Edition
    • Microsoft Windows Server 2003, Enterprise x64 Edition
    • Microsoft Windows Server 2003, Standard x64 Edition
    • Microsoft Windows Server 2003, Web Edition
    • Microsoft Windows Server 2003, Standard Edition (32-bit x86)
    • Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
    • Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
    • Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems
    • Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems
Keywords: 
kbexpertiseinter kbinfo kbsecadvisory kbsecurity kbsecvulnerability kbmsifixme kbfixme kbsurveynew KB981374
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