Feb 20, 2015 - Apple has announced a repair extension program for several models of MacBook Pro made from 2011-Early 2013. How to fix a frozen Mac. If your problem is that your Mac has frozen in the middle of a task, or an app has become unresponsive, it is possible to Force Quit it by right clicking/control clicking.
Although Firefox is able to handle certain on web pages, it may need the help of media players and browser for other content. Although you may have the correct media players installed to play video and audio files, you may be missing the necessary plugins when the media is embedded within the web page itself. When a plugin is missing, a message will appear in place of the content:. ' A plugin is needed to display this content' indicates that the plugin is not installed on your machine. If a link to download the plugin does not appear, install the plugin manually by visiting the instructions for the plugin:. Flash plugin: See and.
The Flash plugin is used for embedded audio and video on many websites. Java plugin:. Silverlight plugin: See.
Windows Media Player plugin: See. The Windows Media Player plugin will only play a specific few Windows media formats (.asf,.asx,.wm,.wma,.wax,.wmp,.wmv, and.wvx) unless the web page is specifically designed for Firefox and other Mozilla browsers. QuickTime plugin: See.
The QuickTime plugin can handle many different types of embedded media. On older operating systems, the QuickTime plugin may not be configured to handle some common file formats found online, such as embedded.mp3 audio on Windows XP.
In such cases, you need to select the media formats you want QuickTime to play in Firefox in your QuickTime Preferences. For other, less common, media players and their plugins, see these websites:. Enable or activate plugins If a plugin is disabled in the Add-ons Manager, you won't be able to use it.
Click the menu button and choose Add-ons Add-ons. The Add-ons Manager tab will open. In the Add-ons Manager tab, select the Plugins panel. Review the list of plugins to see if any of them are disabled. To enable a plugin, click on Never Activate and select either Ask to Activate or Always Activate in its drop-down menu.
If you see an Activate (name of plugin) icon on web pages, where the plugin content should be, you'll need to click on the icon to activate the plugin: For more information, see. Update your plugins Check that you have the latest versions of all your plugins and update any plugins that are out of date. Allow Plugin Container in your Internet security program Allow your Internet security software (including firewalls, antivirus programs, anti-spyware programs, and more) to trust for Firefox. For detailed instructions, see where in that case Firefox means Plugin Container for Firefox. Disable a conflicting plugin If you have more than one plugin installed that can handle the same, this can cause a conflict that prevents some embedded media from playing.
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You may be able to fix the issue by disabling one of the plugins. Click the menu button and choose Add-ons Add-ons. The Add-ons Manager tab will open. In the Add-ons Manager tab, select the Plugins panel.
In the list of plugins, select the plugin you wish to troubleshoot. If you want to disable the plugin, select Never Activate in its drop-down menu. If you want to re-enable the plugin, select Always Activate in its drop-down menu.
For example, you may need to disable the VLC plugin to play embedded QuickTime or Windows Media content. For more information about troubleshooting problems caused by plugins, see the article.
Other solutions Clear the cache See. Disable interfering extensions or ad-blocking software. Ad-blocking software, such as anti-banner filters of your Internet Security program, or extensions, such as Flashblock or Adblock Plus, can prevent audio or video content from playing. If the site works with ad-blocking disabled, you may want to add the site to your whitelist in your adblocker filter. Any Firefox extension can also block plugins. If the video or audio plays when you disable all extensions, then one of your extensions was causing the problem.
For more information, see. Check some Firefox settings.
Cookies. Click the menu button and choose Options. Select the Privacy & Security panel and go to the Cookies and Site Data section. Verify that cookies are enabled and that the site is not blocked in the Exceptions list. Pop-up windows:. Click the menu button and choose Options. Select the panel Privacy & Security panel and go to the Permissions section.
Allow the website as an exception to the 'Block pop-up windows' setting. Remove specific entries in the hosts file (advanced users) If you use a, you can temporarily disable it by renaming it Xhosts. Or, you can edit the hosts file to remove specific entries such as ad.doubleclick.net that can cause videos on certain sites to fail (for more information, see this ). To apply changes to your hosts file, you may need to flush the DNS cache by entering the command: ipconfig /flushdns in the Run dialog box on Windows. Based on information from Share this article.