Windows Media or other plugins stopped working after Firefox update
Some plugins that are no longer maintained, like the Windows Media plugin, have their files installed in a place that Firefox no longer supports.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 address 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.
- Click the menu button and then click ExitQuit . When you restart Firefox the plugins will be enabled.