MS12-016: Description of the security update for Microsoft Silverlight: February 14, 2012

Microsoft has released security bulletin MS12-016. You can view the complete security bulletin by visiting one of the following Microsoft websites:

• Home users:
  http://www.microsoft.com/security/pc-security/bulletins/201202.aspx (http://www.microsoft.com/security/pc-security/bulletins/201202.aspx)
• IT professionals:
  http://technet.microsoft.com/security/bulletin/MS12-016 (http://technet.microsoft.com/security/bulletin/MS12-016)

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

Update information

Microsoft Silverlight is a cross-browser, multi-environment plug-in that delivers the next generation of Microsoft .NET-based media experiences and rich interactive applications for the web.

This update offers a new build (version 4.1.10111.0) that is an upgrade to earlier versions of Silverlight. This update is included in current Silverlight installers.

This update is available from the following sources:

Silverlight site

The Silverlight installer includes all earlier updates in addition to this update. To install the latest version of Silverlight on your computer, visit the following Microsoft website:

Microsoft update and Windows Server Update Services (WSUS)

If you have an earlier version of Silverlight installed on your computer, this update is available from Microsoft Update and Windows Server Update Services (WSUS) as an important update and will be offered as the following:If you do not have an earlier version of Silverlight installed, this update is also available from Microsoft Update and Windows Server Update Services (WSUS) as an optional update and will be offered as the following:

How to hide this update so that it does not appear again

Click here to view or hide detailed information

Removal information

To uninstall Silverlight, visit the following Microsoft website, and then click Uninstall Silverlight:

Update replacement information

This update replaces the following update:

File information

The 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 more information about Silverlight, visit the following Microsoft websites: To report issues about this update or to send any feedback to the Microsoft Silverlight development team, visit the following Microsoft website: