How to Stop Mac from Auto-Joining a Wi-Fi Network
By Devala Rees
By default, a Mac will automatically connect to Wi-Fi when it recognizes a network that it has joined before. If you'd like to stop this from happening for a network you don't want ot auto-join (such as an unsecured network at your local coffee shop) you need to know how to remove a Wi-Fi network from Mac network settings. We'll show you how.