Why the videos will not play in Firefox?

Videos on the YouTube sites and new will not play. Everything worked last night. This afternoon no videos don't play. I tried the update of Real Player plug-ins, re - install Real Player, install QuickTime, QuickTime plug-ins verification, etc. Nothing works.

I have uninstall Realplayer and it works now. RealPlayer has been blocklisted by Flash.

Tags: Firefox

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