Article ID: 2645410 - View products that this article applies to.
Microsoft has released the security bulletin MS12-021. You can view the complete security bulletin by visiting one of the following Microsoft websites:
How to obtain help and support for this security updateHelp protect your PC from viruses and from malware:
Virus Solution and Security CenterHelp installing updates:
Support for Microsoft UpdateSecurity solutions for IT professionals:
TechNet Security Troubleshooting and SupportLocal support according to your country:
PrerequisitesTo install this update, you must have Windows Installer 2.0 or a later version installed on the computer. To obtain the latest version of Windows Installer, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/893803/ )Windows Installer 3.1 v2 (3.1.4000.2435) is available
Command-line switches for this updateFor information about the various command-line switches that are supported by this update, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/262841/ )Command-line switches for Windows software update packages
Restart informationThis update may 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 the required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to allow the restart.
Removal informationTo remove this update, use the Add or Remove Programs item in Control Panel.
Update replacement informationThis update does not replace any previously released update.
File informationThe English (United States) version of this update 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.
For all supported x86-based versions of systems
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Article ID: 2645410 - Last Review: March 13, 2012 - Revision: 1.0