Samsung Galaxy Note 5, update 5.1.1, won't auto connect to wifi

[Sky Yarbrough]

Prior to the 5.1.1 Android update my phone and my wifes (Galaxy S3) used to auto connect to known WiFis. Now they don't. What's the fix for this? (WiFi is always on)

 

[B. Diddy]

Welcome to Android Central! What happens if you forget those networks, then go through the connection process again?