Article ID: 2656351 - Last Review: December 29, 2011 - Revision: 1.0

MS11-100: Description of the security update for the .NET Framework 4 on Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2: December 29, 2011

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INTRODUCTION

Microsoft has released security bulletin MS11-100. To view the complete security bulletin, visit one of the following Microsoft websites:

Home users:
http://www.microsoft.com/security/pc-security/bulletins/201112.aspx (http://www.microsoft.com/security/pc-security/bulletins/201112.aspx)
Skip the details: Download the updates for your home computer or laptop from the Microsoft Update website now:
http://update.microsoft.com/microsoftupdate/ (http://update.microsoft.com/microsoftupdate/)
IT professionals:
http://technet.microsoft.com/security/bulletin/MS11-100 (http://technet.microsoft.com/security/bulletin/MS11-100)

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How to obtain help and support for this security update

For home users, no-charge support is available by calling 1-866-PCSAFETY in the United States and Canada or by contacting your local Microsoft subsidiary. For more information about how to contact your local Microsoft subsidiary for support issues with security updates, visit the Microsoft International Support website:

http://support.microsoft.com/common/international.aspx?rdpath=4 (http://support.microsoft.com/common/international.aspx?rdpath=4)

North American customers can also obtain instant access to unlimited no-charge email support or to unlimited individual chat support by visiting the following Microsoft website:

http://support.microsoft.com/oas/default.aspx?&prid=7552 (http://support.microsoft.com/oas/default.aspx?&prid=7552)

For enterprise customers, support for security updates is available through your usual support contacts.

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MORE INFORMATION

Download information

The following file is available for download from the Microsoft Download Center:

Collapse this imageExpand this image

Download the package now. (http://go.microsoft.com/fwlink/?LinkId=237385 )

Release Date: December 29, 2011

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 (http://support.microsoft.com/kb/119591/ ) How to obtain Microsoft support files from online services

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Prerequisites

To install this update, you must have Windows Installer 3.1 or a later version installed on the computer. To obtain the latest version of Windows Installer, visit the following Microsoft website:

Windows Installer 4.5 Redistributable (http://go.microsoft.com/fwlink/?LinkID=132022)

Command-line switches for this update

For information about the various command-line switches that are supported by this update, see the Windows Installer command-line switches (http://go.microsoft.com/fwlink/?LinkId=195005) document. For more information about Windows Installer, visit the following Windows Installer MSDN website:

Windows Installer MSDN website (http://go.microsoft.com/fwlink/?LinkId=195006)

Restart information

This security update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, you receive a message that advises you to restart.

Removal information

To remove this security update, use the Programs and Features item in Control Panel.

Security update replacement information

This security update replaces the following security update:

2416472 (http://support.microsoft.com/kb/2416472/ ) MS10-070: Description of the security update for the Microsoft .NET Framework 4 on Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2

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FILE INFORMATION

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time and with your current daylight saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.

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