Nintendo Wii U Not Connecting to Wi-Fi

Take the disk out of the console. Turn the console off. Wait 30 seconds and then turn it back on.

From the Wii U Menu, select "System Settings” and using the Left Stick, scroll to the "System Update" icon and press the A Button. Tap "Update" to connect to the Internet and begin the update process.

Consider resetting your home Wi-Fi/internet if your console still cannot connect.