The WAN Miniport (IKEv2) driver in Windows is a virtual network adapter driver used to support IKEv2 (Internet Key Exchange version 2) VPN (Virtual Private Network) connections. IKEv2 is a protocol used for secure VPN connections, and the WAN Miniport driver acts as an intermediary between your device and the VPN service. It is part of the network stack in Windows that allows the operating system to establish and manage VPN connections using the IKEv2 protocol.