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Can't watch YouTube with new firefox version

mihaela2761
mihaela2761
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I have the latest version of FIREFOX I believe 54 and suddenly I can't watch YouTube videos. When I click on a video, any YouTube video, first something appears saying I can't watch and something about HTML5 but this disappear very fast and then is loading and loading and loading and nothing happen. If I refresh the page, when I click on play, again nothing happens, I to reinstall Firefox all my plugins are up to date, I cleared cache, I did everything possible but still unable to watch YouTube videos. I can do that on any other browser except this one. Any thoughts cause I really upset with Firefox right now. Also is becoming increasingly very, very slow.

I have the latest version of FIREFOX I believe 54 and suddenly I can't watch YouTube videos. When I click on a video, any YouTube video, first something appears saying I can't watch and something about HTML5 but this disappear very fast and then is loading and loading and loading and nothing happen. If I refresh the page, when I click on play, again nothing happens, I to reinstall Firefox all my plugins are up to date, I cleared cache, I did everything possible but still unable to watch YouTube videos. I can do that on any other browser except this one. Any thoughts cause I really upset with Firefox right now. Also is becoming increasingly very, very slow.

All Replies (2)

user633449
user633449
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Please do the following:

After refreshing Firefox, try youtube again.

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 10 Contributor
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If you're not ready to Refresh...

According to several users, YouTube stopped supporting Flash. If you use an extension like YouTube Flash Player, or YouTube Flash Video Player, you can remove it now because it is obsolete and may be interfering with your use of HTML5 video on YouTube.

You can view, disable, and often remove unwanted or unknown extensions on the Add-ons page. Either:

  • Ctrl+Shift+a (Mac: Command+Shift+a)
  • "3-bar" menu button (or Tools menu) > Add-ons
  • type or paste about:addons in the address bar and press Enter/Return

In the left column of the Add-ons page, click Extensions. Then cast a critical eye over the list on the right side. Any extensions that Firefox installs on its own are hidden from this page, so everything listed here is your choice (and your responsibility) to manage. Any YouTube-related to video-downloading extensions that might try to force Flash? If in doubt, disable.

Often a link will appear above at least one disabled extension to restart Firefox before the change takes effect. You can complete your work on the tab and click one of the links as the last step.

Any improvement?

After that, if problems continue, please check this diagnostic page: https://www.youtube.com/html5

If you have red boxes for H.264, see this article: Fix video and audio problems on Firefox for Windows N editions.