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unable to play videos from youtube on firefox


I am unable to play youtube videos on Firefox after the updates. Firefox works great with Facebook but can no longer play videos there. I have down loaded adobe flash player it wont work either I dont know what else to do. I have windows 7. Please help.

Additional System Details

This happened

Every time Firefox opened

This started when...

updates to Firefox 8


  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0) Gecko/20100101 Firefox/8.0

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  • Top 10 Contributor
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10738 solutions 96644 answers

Do you see the Flash plugin on the Tools > Add-ons > Plugins and the about:plugins page?

Does the Flash test site confirm that the Flash player is installed?

username27 0 solutions 1 answers

Helpful Reply

The same here. No video on youtube at all, suddenly. I have latest flash player installed.

674981048 0 solutions 1 answers

Download CCleaner, scan and clean....then problem will be solved ;) I fixed mine that way.

Ketonom 0 solutions 3 answers

The latest Adobe Flash plugin adds a 64-bit player as well as the standard 32-bit player. Youtube seems to set a cookie that conflicts with the 64-bit version and therefore causes you to see a black screen when trying to play videos. The following steps should fix your issue if it is related to this update:

  1. Click the Firefox menu on the top left (or the Tools menu if you use the menu bar).
  2. Go to History -> Clear Recent History (Omit first part from the Tools menu).
  3. Make sure both Cookies and Cache are check-marked (feel free to uncheck everything else)
  4. Set the Time range to clear drop-down box to Everything.
  5. Click the Clear Now button.

You should now be able to play Youtube (and presumably) other videos again. Doing this worked for me anyway...

Modified by Ketonom

StarMan 1 solutions 19 answers

Helpful Reply

Hi, please check out this:


derektherev 0 solutions 1 answers

This did not resolve the problem for me. Sadly. Videos play OK one IE but I don't use it as a rule.

BrendaL 0 solutions 2 answers

This is a Flash player issue - I uninstalled the latest Flash Player and reinstalled Flash 10.3 and everything seems to be working again.

(Youtube videos were just coming up as a black box with a play button - when I pressed this I got the message "An error has occurred - please try later"