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- Select the WiFi symbol along the top menu bar and click on Open on Open Network Preferences at the bottom of the drop down menu.
- Click on WiFi in the menu on the left and click Advancedclick Advanced located at the bottom right of the pop-up window.
- Select the wireless network you want to forget and click the minus sign. Click OKClick OK.
- At the top right-hand click on Turn WiFi Off and click on Apply. Click on Turn WiFi On and reconnect.