What is your operating system & version?
What is your web browser?
What means "doesn't work"; what exactly happens when you try?
[topic moved to Flash Player forum]
Please download Flash Player from the following link: http://helpx.adobe.com/content/help/en/flash-player/kb/installation-problems-flash-player- windows.html#main-pars_header
After downloading, close browsers and double-click the downloaded file.