There are many reasons for this problem; one of the reasons is that Windows Update failed to install or update the Network drivers, in that case, you have to update the required driver manually.

Resetting network settings reinstalls all adapters, erases saved Wi-Fi networks, and custom DNS settings. To perform a network reset, head into Settings > Network & Internet > Advanced Network ...

If you see the message Security or firewall might be blocking the connection following completion of Windows Network Diagnostics to determine what’s causing internet or network connection issues on ...

Windows users sometimes experience problems when connecting their PC to an Internet source. The most common of these Windows errors is the error message “Windows ...