Why won't my wifi turn on?

[AC Question]

wifi won't turn on

I have a galaxy 4 tablet & the wifi would not turn on, I followed the troubleshooting faq for this & ended up doing a factory reset...but still have the problem. Also it keeps asking to activate Knox license.

 

[B. Diddy]

Re: wifi won't turn on

Welcome to Android Central! Do you mean the wi-fi toggle switch doesn't even move? Is it greyed out?