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The Silverlight plugin is used by some websites to display multimedia. Learn whether it is installed and how to install the latest version.

Microsoft Silverlight is a plugin used by some websites to display multimedia content. {for win,mac}This article describes how to check whether you have Silverlight installed and how to install or update it.{/for} {for linux} Silverlight is not available for the Linux platform and the only open source implementation of Silverlight, called Moonlight, is not developed anymore. It can be still compiled from source but it is not recommended to use it. More information can be found at the [http://www.go-mono.com/moonlight/ Moonlight installation page]. {/for} {for =fx42,win7,win8,win10} <!--Windows 64-bit Firefox requires Windows 7 or above (bug 1093741)--> {warning}'''Important:''' The new 64-bit version of Firefox for Windows does not currently recognize or support this plugin (see [https://blog.mozilla.org/futurereleases/2015/10/08/npapi-plugins-in-firefox/ this Mozilla blog post] for details). This will be fixed in Firefox version 43.{/warning} {/for} {for win,mac} __TOC__ = Checking for Silverlight = To determine whether you have the Silverlight plugin installed, visit Microsoft's [http://www.microsoft.com/silverlight/resources/install.aspx Get Microsoft Silverlight] page. If Silverlight is installed, you will see a message with your Silverlight version. ;[[Image:Silverlight5-current]] = Installing Silverlight = If you do not have Silverlight installed, follow the '''Installation Instructions''' on Microsoft's [http://www.microsoft.com/silverlight/resources/install.aspx Get Microsoft Silverlight] page. = Updating Silverlight = If Silverlight is installed but your version is outdated, the [http://www.microsoft.com/silverlight/resources/install.aspx Get Microsoft Silverlight] page will show your installed version and the current version of Silverlight. Click the current version link to manually download and install the latest version of Silverlight. {note}'''Note:''' Silverlight has an automatic update feature so manual updates may not be necessary. See the [https://msdn.microsoft.com/en-us/library/cc645084%28v=vs.95%29.aspx Microsoft Silverlight Configuration Dialog Box] article and the [http://www.microsoft.com/getsilverlight/resources/documentation/Updater.aspx Microsoft Silverlight Updater] article for details.{/note} = Uninstalling Silverlight = To uninstall Silverlight, follow the '''Uninstall Silverlight''' instructions on Microsoft's [http://www.microsoft.com/getsilverlight/Get-Started/Install/Default.aspx Get Microsoft Silverlight] page. {/for} {for mac} = Silverlight is installed but does not work = Mozilla blocks older versions of Silverlight, causing sites like Netflix to display a message asking you to install Silverlight. To fix this, please '''update your installation of Silverlight''' to the latest version by visiting Microsoft's [http://www.microsoft.com/silverlight/resources/install.aspx Get Microsoft Silverlight] page. In some cases, this may not resolve the problem and you will need to manually activate the Silverlight plugin: #[[T:Open Add-ons|type=Plugins]] # Find Silverlight in the list of plugins and select {button Always Activate} in its drop-down menu. {/for}