When creating icons for Windows 10 I can not get rid of the drop shadow on the icon

2018-10-22 21:01:49

I'm using Adobe Phototshop to create an image and then Greenfish Icon Editor Pro to create an icon for my new application. For some reason whenever I create a new icon I always get a shadow box around the icon. Below you can see I have three icons side by side and only the one I created (left) has this shadow box effect. In the editor there is nothing like that and it looks clean.

Why does this happen and how can I get rid of it?

If you click on the image to see it larger you will notice the box is all around the icon.