Adobe announced that Flash will no longer be supported after 2020. Microsoft will phase out support for Flash in Microsoft Edge and Internet Explorer ahead of this date. Flash led the way on the web for rich content, gaming, animations, and media of all kinds, and inspired many of the current web standards powering HTML5. Microsoft Edge will continue to ask users for permission to run Flash on most sites the first time the site is visited, and will remember the users preference on subsequent visits.”]
Source: https://blogs.windows.com/msedgedev/2017/07/25/flash-on-windows-timeline/