Your Mac robotically reconnects to Wi-Fi networks you’ve beforehand linked to. Beginning with macOS Excessive Sierra, now you can inform your Mac not to robotically join to sure Wi-FI networks. Your Mac will keep in mind the Wi-Fi community’s passphrase and different connection particulars, however gained’t join until you inform it to.
That is helpful for Wi-Fi networks chances are you’ll use often, like Comcast’s xfinitywifi or different public Wi-Fi networks. On older variations of macOS, you had to delete a saved Wi-Fi community and its passphrase to cease the automated connection from occurring.
First, open the System Preferences window by clicking Apple menu > System Preferences.
Click on the “Network” icon within the System Preferences window.
Choose the “Wi-Fi” choice within the left pane and select the Wi-Fi community you need to modify from the Network Identify field.
Uncheck “Automatically be a part of this community” and your Mac gained’t robotically be a part of the Wi-Fi community sooner or later.
You may as well set the order of your Wi-Fi networks to inform your Mac to desire sure Wi-Fi networks over different ones. Your Mac will strive to join to obtainable Wi-Fi networks within the order you select, preferring those on the high of the listing.