Mac Silverlight Limitations

MacOS 10.6 (Intel-based) 
Firefox 38.x.x
Firefox 42.0.x-52.0.x
Safari 6.x-9.x

MacOS 10.7 - 10.11 (Intel-based)
Firefox 38.x.x
Firefox 42.0.x-52.0.x
Safari 6.x-9.x

** Chrome is no longer supported, due to restrictions in the browser.