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!

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

Youtube videos not playing. I see only a black box. They work on Safari.

  • 1 reply
  • 104 have this problem
  • 3 views
  • Last reply by amprez

j.simon@me.com
j.simon@me.com
more options

I'm running Mac OS 10.6.8, have upgraded to the latest version of Flash Player, and Youtube videos will not play on Firefox 5.0. They will play on Safari. I think it stopped working when I upgraded to Firefox 5.

I'm running Mac OS 10.6.8, have upgraded to the latest version of Flash Player, and Youtube videos will not play on Firefox 5.0. They will play on Safari. I think it stopped working when I upgraded to Firefox 5.

All Replies (1)

amprez
amprez
more options

I was having this problem too. It is simple for Mac - clear the cache. Go to Firefox preferences, network and clear the cache. It should work then...it did for me.