Then you may try some Firefox YouTube downloader add-ons alternative, such as install a free desktop Firefox YouTube downloader.īest Alternative to Firefox YouTube Downloader Add-ons If you have reinstalled, updated the add-on or tried a different YouTube downloader Firefox add-on, it is still with no use.Uninstall the original add-on and try another YouTube Firefox addon, for instance, 1- Click YouTube Video Download, Download YouTube Videos as MP4, Easy YouTube Video Downloader Express, etc.Update your Firefox browser or go back to previous Firefox version.In Mozilla Firefox: Tools -> Options -> Clear Your Recent History and Remove Individual Cookies. Tools menu > Add-ons > 'Gear' button > 'Check for Updates'. Update your YouTube downloader Firefox extensions.To solve the YouTube downloader add-ons for Firefox not working problem, you can try reinstalling the Firefox addon.Solutions for Firefox YouTube Downloader Not Working Or even, sometimes you may meet the Firefox YouTube downloader extensions are discontinued. Firefox add-ons may be just incompatible with newest version of Firefox or have the potential of conflicts with other extensions.Firefox and YouTube get updated frequently, which often results in Firefox YouTube downloader add-ons not working properly at times and can't download YouTube videos with Firefox browser successfully.Possible Causes for 'Firefox YouTube Downloader Not Working'