This is a Samsung Community Moderators response to the issue. Hopefully you will find this information helpful.
LED Indicators automatically were defaulting to "Off" when update initally rolled out. You will want to make sure that it has been toggled back on, cache has been cleared, and that a full restart of your device has been done. For those still experiencing not LED on notifs, check those individual applications to make sure that notifications haven't been toggled off completely, or at least LED ones.
03-22-2017 12:59 AM