I'm trying to install Flash Player on my Windows 8 64-bit system for Firefox. When I try to install Flash Player, the installer works fine up to the point of the bar tracking the installation progress. It gets about halfway across, and then I get a message that says Error: Application Already In Use with a green check next to it. Then the installer tells me that the installation has failed. Can anyone tell me how to fix this so I can use Flash? Thanks for the help.
Use the Offline installer:
http://download.macromedia.com/pub/flashplayer/current/support/install_flash_player.exe <---FULL installer - works offline
http://download.macromedia.com/get/flashplayer/current/licensing/win/install_flash_player_ 13_plugin.msi <-- if the above link won't install
Save it. Reboot and then run it.