I have comcast and thought changing to their DNS at 220.127.116.11 would work. But, sure enough, 18.104.22.168 somehow made the TV connect again. BTW, it had been fine using auto settings for 2+ years. Strange that it needed this manual setting.
All frustrated users should try this trick first.
Supermama said: I just thought I would post this solution here after I spent several days and hours on the phone trying to get my Samsung Smart TV to connect to the internet. After having the television for 2 years with not problems at all, suddenly it would not connect to WiFi. The last tech at Samsung that I spoke with knew exactly what to do and my TV was back working and connection to the internet within a few minutes. He told me to reset the DNS to 8888. Detailed instructions for the computer challenged community such as me: On your TV remote, go to Menu, Settings, Network Next select Network Settings, Start, IP Settings Then select DNS mode and make sure the green check is on “manual” Enter 8 8 8 8 and OK Bingo, instant internet (note – I also was told to click on Samsung Smart Hub in upper right corner. I had reset my TV and it needed to update and add back my programs) I have a Samsung Smart TV Model No. UN553S6500 (a 2012 model) NOTE: I adore people that know their jobs!♥ Thanks Chris!