How to Forget a Network on Mac How to Forget a Wireless Network on Mac Click the Wi-Fi icon in the top-right corner of the Mac menu bar. Select Open Network Preferences.... Click Advanced. Click a network in the list to select it. (To select multiple networks, hold the Command key while clicking them.) You can also drag networks higher up the list to prioritize them over other local networks. Click the minus ("–") icon below the list to forget the selected network.