Ce site disposera de fonctionnalités limitées pendant que nous effectuons des opérations de maintenance en vue de vous proposer un meilleur service. Si un article ne règle pas votre problème et que vous souhaitez poser une question, notre communauté d’assistance est prête à vous répondre via @FirefoxSupport sur Twitter, et /r/firefox sur Reddit.

Rechercher dans l’assistance

Évitez les escroqueries à l’assistance. Nous ne vous demanderons jamais d’appeler ou d’envoyer un SMS à un numéro de téléphone ou de partager des informations personnelles. Veuillez signaler toute activité suspecte en utilisant l’option « Signaler un abus ».

En savoir plus

Firefox won't play Youtube videos. Website opens OK, but when I click on a video, nothing happens; the screen remains dark. Windows 7 Pro x64, Firefox 27.

  • 4 réponses
  • 25 ont ce problème
  • 8 vues
  • Dernière réponse par nharrold

more options

Youtube was working OK, then just stopped opening and playing videos. Also won't play from the links in my Bookmarks list. I've loaded the latest Adobe flash player and Firefox 27. Tried some of the suggested fixes, but none of them worked.

Youtube was working OK, then just stopped opening and playing videos. Also won't play from the links in my Bookmarks list. I've loaded the latest Adobe flash player and Firefox 27. Tried some of the suggested fixes, but none of them worked.

Toutes les réponses (4)

more options

Hello nharrold,

Thanks for contacting Mozilla Support. I'm sorry that youtube isn't working for you. Here's some things to try to get youtube back up and running again.

Check your plugins are uptodate!

   http://www.mozilla.org/en-US/plugincheck/ 

Type about:addons in URL and Goto Plugins

   Check all the plugins are "Always Active" 

Give these things a try and please let us know if this solves your issue.

Cheers, Patrick

more options

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

  • Do NOT click the Reset button on the Safe Mode start window.

You can check for problems with current Flash plugin versions and try these:

  • disable a possible RealPlayer Browser Record Plugin extension for Firefox and update the RealPlayer if installed
  • disable protected mode in the Flash plugin (Flash 11.3+ on Windows Vista and later)
  • disable hardware acceleration in the Flash plugin
more options

Plugins were all active. Didn't help any.

more options

I finally fixed it by using System Restore.