For many reasons, Windows will show all available networks. If the network is unsecured it may connect to it but again no. Windows does not provide a means to hide networks.
You didn't share which Windows so I can't tell if you need to change the connect to features or how.
How to delete next doors wireless network connection from appearing in system tray. I know how to delete from manage wireless networks. As we have been given the security key and it is too tempting for my husband to have these details, so we just want to delete from appearing in system tray. If this is not the correct site to ask this question can you let me know which site to go to. Thanks