Why has my Mobile Hotspot quit working?

[AC Question]

I have a Galaxy S5 Active and the hotspot has quit working for all of my devices. I keep re-entering the password and the system keeps asking me to resubmit it.

 

[Raptor007]

Did you recently update anything on your software, OS updates, security patches? Try wiping the cache on the phone and if that doesn't work make a backup and factory reset to see if it resolves it. It clearly things you are putting in the wrong password or no password at all which would be odd.