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Youtube videos not playing in Firefox 4.0.1.When I checked control player am using adobe flash player 11.4.402.287.

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Youtube videos not playing in Firefox 4.0.1.When I checked control player am using adobe flash player 11.4.402.287.

YouTube videos not playing in Firefox 4.0.1.When I checked control player am using adobe flash player 11.4.402.287

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Re: Youtube videos not playing in Firefox 4.0.1.When I checked control player am using adobe flash player 11.4.402.287.

Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

  • Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

"Remove Cookies" from sites causing problems:

  • Tools > Options > Privacy > Cookies: "Show Cookies"

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.

You can check for problems caused by recent Flash updates and try these:

  • disable a possible RealPlayer Browser Record Plugin extension for Firefox and update the RealPlayer if installed
  • disable protected mode in Flash 11.3 and later
  • disable hardware acceleration in the Flash plugin