Can't watch Youtube..no network connection..how can I get it?

A

AC Question

can't watch youtube...no network connection...

I have two samsung S4 phones, and two samsung tablet 2 (10.1"). All work with everything (google, yahoo and youtube, etc) . Only one of the samsung tablet 2 does not connect to youtube...kept showing "...please check your network connection." Google play app doesn't work either. Restarted and cycled power does not help. My home wi-fi is excellent. All my wi-fi devices are working great. Please advise. Thank you.