Check Specify Authentication mode and choose User Authentication.

Click OK to close miis Wireless Network properties.

Your computer only allows one network connection at a time.

To resolve this issue, disable 802.1X feature on your Windows computer.

Sometimes when the settings of the client device and the router don't exactly match, the client won't see the router's Wi Fi network.

Click Manually connects to a wireless network, then click next. Under Information for the wireless network you want to add a) Enter miis into the Network name field.

Uncheck Varify the server’s identity by validating the certificate, then click the Configure button. Make sure the Automatically use my Windows logon name and password (and domain if any) checkbox is unchecked.