Perform the suggestions mentioned in the following articles: * [https://support.mozilla.com/en-US/kb/Template:clearCookiesCache/ Clear Cookies & Cache] * [[Troubleshooting extensions and themes]] * [[Video or audio does not play]] Check and tell if its working. ------------------------------------------------------------------------------------------ * Update All your Firefox Plugins -> [https://www.mozilla.org/en-US/plugincheck/] * '''When Downloading Plugins Update setup files, Remove Checkmark from Downloading other Optional Softwares with your Plugins (e.g. Toolbars, McAfee, Google Chrome, etc.)'''