If you haven't already, please select the answer that solves the problem.  This will help other users with similar problems find the solution more easily.

''lawraWeltreich [[#question-1074183|said]]'' <blockquote> after upgrading to firefox 39, facebook videos won't play, they just load endlessly. videos on almost all other websites work, though </blockquote> Please report this to facebook and firefox You may submit feedback directly to the Advocacy team through the following page: * [https://input.mozilla.org/feedback/ Submit your Feedback] The [https://wiki.mozilla.org/Advocacy User Advocacy] team reviews all feedback and reports on the findings to the product teams and relevant parties, helping to influence and shape our products. If you haven't already, please select the answer that solves the problem. This will help other users with similar problems find the solution more easily. Thank you for contacting Mozilla Support.