Is this Windows 8 or Windows 8.1?
What browser, including version?
What happens when you follow the instructions "Click to run Adobe Flash Player"
Microsoft embeds Flash Player in win 8.1 and above in IE and Edge and there isn't a separate, standalone, installer for Flash Player for IE or Edge. Please refer to the following two technotes for assistance:
you can download the update from the link at the bottom of the Flash Player issues on Windows 8 page. This will download the latest update from Microsoft (we don't host the Windows Update, just a link that downloads the update from Microsoft).
Below links might be helpful: