Why will my Galaxy Tab S2 (SM-T713) not connect to WI-FI?

[Android Central Question]

I've done everything I can Think of. No results.

 

[funpig]

Have you tried different wifi sources?

 

[anon(7901790)]

Is this home, private, or public wifi? What security is being used, if any? If home or private wifi, is MAC filtering turned on?