Some plugins that are no longer maintained, like the Windows Media plugin, have their files installed in a place that Firefox no longer supports. This causes the plugin to stop working. We'll explain how to make these plugins work again.
Change a Firefox setting to turn these plugins back on
In the Location bar, type about:config and press EnterReturn.
- The about:config "This might void your warranty!" warning page may appear. Click to continue to the about:config page.
- Search for plugins.load_appdir_plugins
- Double-click plugins.load_appdir_plugins to change its value to true.
At the top of the Firefox window, click on the button and then select At the top of the Firefox window, click on the menu and then select On the menu bar, click on the menu and select At the top of the Firefox window, click on the . menu and selectWhen you restart Firefox the plugins will be enabled.
Click the menu button and then click ExitQuit .
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Last Update: 2015-07-09