The WPAD protocol is designed to allow organizations to provide proxy settings to all devices that connect to the network. The organization can place a WPAD configuration file in a standard place, and when WPAD is enabled, your computer or other device checks to see if there’s WPAD proxy information provided by the network. Your device then automatically uses whatever settings the proxy auto-configuration (PAC) file provides, sending all traffic on the current network through the proxy server.
Within Windows 7, access Control Panel –> Internet Options -> Connections tab –> LAN settings button –> clear the “Automatically detect settings” check box.
Within Windows 10, access Settings -> Network & Internet –> Proxy –> disable the “Automatically detect settings” option.