Use the Silverlight plugin to play audio and video

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  • Revision id: 46339
  • Created:
  • Creator: AliceWyman
  • Comment: Silverlight is installed but does not work: may need to enable/activate plugin after update
  • Reviewed: Yes
  • Reviewed:
  • Reviewed by: AliceWyman
  • Is approved? Yes
  • Is current revision? No
  • Ready for localization: Yes
  • Readied for localization:
  • Readied for localization by: AliceWyman
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Microsoft Silverlight is a plugin used by some websites to display multimedia content. This article describes how to check whether you have Silverlight installed, and if not, how to install it.


Checking for Silverlight

To determine whether you have the Silverlight plugin installed, visit Microsoft's Silverlight installation page.

If Silverlight is installed, you will see a message with your Silverlight version.

Installing Silverlight

If you do not have Silverlight installed, follow the instructions on Microsoft's Silverlight Detailed Installation Instructions.

If you do not have Silverlight installed, follow the instructions at Go-Mono.com's Moonlight installation page. Moonlight is an open source implementation of Microsoft Silverlight for Unix-like systems.

Uninstalling Silverlight

To uninstall Silverlight, follow the instructions on Microsoft's Silverlight Uninstall page.

To uninstall a plugin, see Manually uninstalling a plugin.

Silverlight is installed but does not work

Mozilla blocks older versions of Silverlight, causing sites like Netfix to display a message asking you to install Silverlight. To fix this, please update your installation of Silverlight to the latest version using Microsoft's Silverlight installation page.

In some cases, this may not resolve the problem and you will need to manually enable the Silverlight plugin:

  1. Click the menu button Fx89menuButton, click Add-ons and themesExtensions and themes and select Plugins.
  2. Find Silverlight in the list of plugins and click its Enable button.

In some cases, this may not resolve the problem and you will need to manually activate the Silverlight plugin:

  1. Click the menu button Fx89menuButton, click Add-ons and themesExtensions and themes and select Plugins.
  2. Find Silverlight in the list of plugins and select Always Activate in its drop-down menu.