Should I install this update

  • This update is released on July 23, 2014 and offers a new build (version 5.1.30514.0) of Microsoft Silverlight. For more information about Silverlight, see the What is Silverlight section.

  • If you have Silverlight installed, or encounter the issue that is described in this article, we recommend you to upgrade Silverlight for a better website experience. You can see How to verify Silverlight is installed in this article.

  • This update is included in current Silverlight installers. If your computer does not have Silverlight installed, the installer will be offered to you by Microsoft Update or by Windows Server Update Services (WSUS).

If you do not want to install this update, you can refer to How to hide this update so that it does not appear again in this article.

Issue that is fixed by this update

When you switch between tabs or pages in a Silverlight browser application that uses tab-switched controls, the memory usage of the application keeps increasing, and eventually the application crashes.

How to obtain this update

This update is available from the following sources.

Microsoft Silverlight site

The Silverlight installer includes all previous updates in addition to this update. To install the latest version of Silverlight, go to the following Microsoft website:

Get Microsoft Silverlight

Microsoft Update

This update is also available from Microsoft Update. If you have an earlier version of Silverlight installed, this update will be offered as "Update for Microsoft Silverlight (KB2977218)." If a computer does not have Silverlight installed, this update will be offered as "Microsoft Silverlight (KB2977218)."

WSUS

This update is also available on Microsoft Update through WSUS.

If a computer has an earlier version of Silverlight installed, this update will be offered as "Update for Microsoft Silverlight (KB2977218)."

If a computer does not have Silverlight installed, this update will be offered as "Microsoft Silverlight (KB2977218)."

By default, updates that are deployed by WSUS are not installed automatically. The WSUS administrator can configure the server to automatically push an approved update onto connected clients.

Every installation of Silverlight includes an automatic update feature that can automatically install updates on computers that are running Microsoft Windows when the Silverlight plug-in is running and the user has administrative rights. This feature operates independently from Microsoft Update or WSUS.

Silverlight update information

Restart requirement

You do not have to restart the computer after you apply this update.

Note If you have had an earlier version of Silverlight installed, or you are using Mozilla Firefox, you have to restart your browser.


Windows 8.1

  1. Swipe in from the right edge of the screen, and then tap Search. Or, if you are using a mouse, point to the lower-right corner of the screen, and then click Search.

  2. In the search box, type Windows Update.

  3. Click Check for updates.

  4. After the scan for updates is completed, click the optional update link.

  5. In the Select updates to install section, right-click the update that you want to hide, and then click Hide update.

  6. Click OK.

Windows 8

  1. Swipe in from the right edge of the screen, and then tap Search. Or, if you are using a mouse, point to the lower-right corner of the screen, and then click Search.

  2. Tap or click Settings.

  3. In the search box, type Windows Update, and then click Install optional updates.

  4. Click Check for updates.

  5. After the scan for updates is completed, click the optional update link.

  6. In the Select updates to install section, right-click the update that you want to hide, and then click Hide update.

  7. Click OK.

Windows Vista and Windows 7

  1. Click Start, point to All Programs, and then click Windows Update.

  2. Click Check for updates.

  3. After the scan for updates is completed, click the optional update link.

  4. In the Select the updates you want to install section, right-click the update that you want to hide, and then click Hide update.

  5. Click OK.


Windows XP

  1. Click Start, point to All Programs, and then click either Windows Update or Microsoft Update.

  2. Click Custom.

  3. Click to clear the check box that is next to the update that you want to hide.

  4. Expand the update that you want to hide, and then click to clear the Do Not show this update again check box.


How to verify Silverlight is installedVerify your installation by visiting the Silverlight installation page.

More Information


Microsoft Silverlight is a powerful tool for creating and delivering rich Internet applications and media experiences on a website. Silverlight is a free plug-in that is compatible with multiple browsers, devices, and operating systems. It has features and purposes similar to those of Adobe Flash.


For more information about Silverlight, go to the following Microsoft websites:

Silverlight administration
Microsoft Silverlight
Silverlight developer resources

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.



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