These instructions are NOT applicable to Flash Player included with Google Chrome. Visit the Flash Player Help page for instructions on enabling (or disabling) Flash Player in various browsers.
If you use Windows, see Uninstall Flash Player | Windows.
Beginning with Flash Player 11.5, uninstalling the Flash Player resets the AutoUpdateDisable and SilentAutoUpdateEnable settings in mms.cfg to their default values:
If you are running the Flash Player uninstaller as part of your deployment process, redeploy any custom changes to either AutoUpdateDisable or SilentAutoUpdateEnable.
Bookmark or print this page so that you can use the rest of these instructions after you close your browser. Close all browsers and other applications that use Flash Player, including instant messaging applications, SWF files, and projectors (EXE files that play SWF files). Otherwise, the uninstaller cannot finish (even though it appears to finish).