Edge is the default browser in Windows 10. Edge does not support Silverlight but Internet Explorer does. Many people mistake Edge for IE. The icon for Internet Explorer is an e with a golden circle but Edge icon is an e with no circle. To start Internet Explorer hit the "Windows" key and key in "Internet" you should see Internet Explorer on the top of the search result list. Hit Internet Explorer and it should start. Then install Silverlight, see link below.You need to download and install an older versions of Firefox that still support Silverlight. To do this, you’ll have to uninstall Firefox and install an older version (Firefox 52 ESR ). Then install Silverlight, see link below. There are security risks to doing this, so proceed at your own risk. Also note that Firefox automatically updates to the newest version every time you open it, so make sure you disable automatic updates so that you don’t have to uninstall and reinstall it every time you want to use knittingpatterns.is.