Why won't Xperia Z3 connect to Wi-Fi?

[AC Question]

I updated two days ago to 5.0.2 build number 23.1.A.1.28 and since then it won't connect to Wi-Fi. I keep my hidden, so I forgot it and re-entered it, but it still won't connect. Tried restarting the phone as well, still nothing. Also attempted wi-fi hotspots and those don't work either. All other devices connect to my wi-fi except the Xperia. How can I resolve this without factory resetting the phone or downgrading the OS.

I have a D6603 Xperia in case that makes any difference.

 

[B. Diddy]

Welcome to Android Central! Try rebooting the router, even though other devices connect fine. See this guide for more ideas: http://forums.androidcentral.com/am...roubleshooting-wi-fi-connection-problems.html