some kind of error with adobe

since december 4th, my comodo icedragon isn’t working properly: videos, games and other things that use adobe aren’t loading. I tried using mozila, to see if the problem was in my computer, but they all worked .So, I tried updating the flash player, nothing changed. I also tried to update comodo, and it shows that “Checking for IceDragon update failed (please try later)” and I tried later, and it showed the same message.I tried uninstalling and installing a new icedragon, but the error remained. what should I do?

Operating System: windows 7 ultimate 64bit
Security Software: comodo internet security premium

Try uninstalling Flash following this page: Uninstall Flash Player for Windows . Then install it again.