Windows 7:

1. Start Network and Sharing Center.
   
2. In the Tasks pane, click Manage wireless networks.
   
3. Right-click the connection you want to delete, and then click Remove network.
   
4. In the Manage Wireless Networks - Warning dialog box, click OK.
   

Mac OS (Apple Laptop):

1. Click the wifi symbol at the top of your screen, and select Open Network Preferences.
   
2. In the lower-right corner, choose Advanced.
   
3. Under Preferred Networks select Wifi profile
   
4. Click the minus (-) button to forget.
   
5. Click OK.
   

Mac iOS (Apple Phone):

1. From the home screen, choose Settings.
   
2. In the settings menu, choose Wi-Fi.
   
3. Locate Wifi profile and click the blue symbol next to the name.
   
4. If the option to forget the network is available, tap Forget this Network
   
5. From the home screen, choose Settings.
   
6. In the settings menu, choose General.
   
7. Locate Profile and tap on it.
   
8. Tap on delete profile.
   

Windows 10:

1. Click the Network icon on the lower right corner of your screen.
   
2. Choose Network settings.
   
3. Click on Manage Wi-Fi settings.
   
4. Under Manage known networks, select Wifi profile.
   
5. Then click Forget.
   

Android:

1. From the home screen, choose Settings.
   
2. In the settings menu, choose Wi-Fi.
   
3. Locate Wifi profile and tap or press and hold it.
   
4. Choose Forget.