Adobe Flash is turned off by default in the new Microsoft Edge. This is because Adobe announced that Flash will no longer be supported after 2020. Microsoft plans to remove Flash from Windows entirely by the end of 2020. Other browsers like Google Chrome, Mozilla, and Safari are also planning on removing Adobe Flash in the same timeframe.
Here’s how to allow or block Flash permanently for individual websites:
Go to Settings and more > Settings .
In the left navigation, select Site permissions.
In Site permissions, select Adobe Flash.
Set the toggle on for the Ask before running Flash option.
The Block and Allow lists will be available after you visit a site that uses Flash.
The next time you visit a site the uses Flash, the browser will ask for your permission before allowing Flash to run.