How to Forget a Wi-Fi Network on macOS

macOS stores Wi-Fi network profiles in the Keychain, so forgetting a network removes both the connection profile and the saved password in one step — if you're not sure of the current password, check Keychain Access before proceeding. The forget option lives in System Settings > Network > Wi-Fi, where clicking the Details button next to the connected network reveals a Forget This Network button along with security type, connection statistics, and lease information. Networks you've connected to previously but are currently out of range don't appear in the connected-network Details view; those are managed separately under the Preferred Networks section accessible from the same Wi-Fi settings screen.