Greetings, all peoplewhohave Authenction Key Failed error don't worry. I had this problem and i found it out. So now im going to tell you.
Most of guide writers forgets to tell you to change password in WORLD.CONFG.
So go into "arcemu-world.conf" and serch for a line which is named like this : <LogonServer DisablePings = "0"
RemotePassword = "XXXXXXX"> It's usually RemotePassword : "Ascent" so change it to your MYSQL password. and voila. gratz you're server is working!
Cyaaa :wave: