I recently found that I could not watch Youtube Videos. The error I received was that there was a problem with the video I was trying to watch in Youtube. I had the latest version of Adobe Flash player installed already. It listed many reasons as to why the videos would no longer play in Youtube. I did everything and checked everything they said to do. I then followed instructions on uninstalling and re-installing Flash Player. I had no version of Flash player installed after uninstalling 11.9. When I tried to re-install Flash Player it keeps telling me I have a newer version of Flash Player installed already when there was none there. This had been a very frustrating thing to deal with. Any Help would be appreciated. I can not watch any videos that use Youtube also even when I had Flash Player 11.9 installed.
Download and save the Flash Player uninstaller
Download the Adobe Flash Player installer(s) directly by right clicking one (or both) of the following links and selecting "Save Target as" (using IE) or "Save Link as"(using other browsers).
If you use other browsers I recommend downloading BOTH - Save them to your downloads folder and DO NOT run them yet.
Close your browser and check the Task Manager to be sure it's closed completely.
Run the uninstaller.
Reboot your system.
BEFORE you open anything else, locate and run the installers. Your Flash Player should be updated for IE and other browsers.
If you still have troubles with IE, see: Enabling Flash Player in Internet Explorer