how fix adobe flash player error in firefox

adobe flash  player error in firefox

adobe flash player has been install ., but youtube videos in not 
playing in firefox.. lets fix it

step1:
make sure you have install from official site and the latest version
of adobe flash player

fix adobe flash  player error

step2:
 now open firefox go to tools click on add on and now
click on plugins 

 step3:
now find shockwave player in the list and make sure it is enable
restart your firefox ...! and done