This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

You Tube page error message

  • 4 replies
  • 1 has this problem
  • 3 views
  • Last reply by cor-el

more options

The following You Tube page

http://www.youtube.com/watch?v=of5Z2Z7TjOM You Tube - Complete nocturnes by Chopin

gives an error message and cannot be accessed in Firefox 20.0. It opens without problems in Internet Explorer 10/64

The following You Tube page http://www.youtube.com/watch?v=of5Z2Z7TjOM You Tube - Complete nocturnes by Chopin gives an error message and cannot be accessed in Firefox 20.0. It opens without problems in Internet Explorer 10/64

All Replies (4)

more options

Hi petermcwerner,

What Error message You are getting ? I can watch the Video with Firefox.

more options

Check that you haven't joint HTML5 on YouTube as that may send MP4 files that Firefox doesn't support.

Try to opt-out of HTML5 video on YouTube.


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 or otherwise make changes.
more options

Thank you for your responses. They seem quite time consuming to try, so I prefer to continue using IE 10/64 on those YouTube sites where Fox provokes errors

Modified by petermcwerner

more options

You haven't told us what error messages you get in Firefox, so could you please do this?