Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

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

What could be causing Youtube to stop working in Firefox, giving just a black box instead of a video?

  • 1 reply
  • 12 have this problem
  • 30 views
  • Last reply by James

more options

Whenever I try to view any video on Youtube in Firefox, I get an empty black box instead of a video. There are no buttons etc, nothing at all. If I right click, a grey box appears with "About Flash..." and "movie not loaded".

Youtube works fine in Internet Explorer, and I've tried uninstalling and reinstalling Flash and Shockwave. I'm on a laptop running Windows 7 Home Premium, SP1, 32 bit, and Firefox 5.0.

Any ideas?

Andy

Whenever I try to view any video on Youtube in Firefox, I get an empty black box instead of a video. There are no buttons etc, nothing at all. If I right click, a grey box appears with "About Flash..." and "movie not loaded". Youtube works fine in Internet Explorer, and I've tried uninstalling and reinstalling Flash and Shockwave. I'm on a laptop running Windows 7 Home Premium, SP1, 32 bit, and Firefox 5.0. Any ideas? Andy

All Replies (1)

more options

Try clearing the Cache in Firefox.

Tools-> Clear Recent History -> [v] Cache

or Tools->Options->Advanced->Network -> Offline storage -> [Clear Now]

Youtube may have made some changes recently. Clear the Youtube cookie and refresh page if above does not do it.

Modified by James