I have Windows 7, Firefox 8. Any other browser will play YouTube except for Firefox. I installed and ininstalled Flash, rebooted each time. The You Tube page seems strange.

I also tried http and https.

Clear the cache and cookies from sites that cause problems.

"Clear the Cache":

  • Tools > Options > advanced > network > storage (Cache) offline: 'clear now '.

'Delete Cookies' sites causing problems:

  • Tools > Options > privacy > Cookies: "show the Cookies".

Start Firefox in Firefox to solve the issues in Safe Mode to check if one of the extensions or if hardware acceleration is the cause of the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > appearance/themes).

Tags: Firefox

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