The above post tells of problems with Samsung and Netflix going back a long way .
There seems to be a recent issue with the netflix app on Samsung Smart TV's that Samsung don't seem to want to do anything about. I have a feeling this also applies in your case
On another forumthere is a story about the Netflix app not working on new Samsung TV's . Not sure if true or notCode:https://forums.whirlpool.net.au/archive/2565659
Here are a few things to try
Bookmarks