It seems like you might be referring to a "VPN window," which is a term sometimes used in the context of setting up a VPN for access to accounts on a remote network. A VPN window typically refers to a virtual private network that you can access from your local network (e.g., your home network) to access remote accounts or sites that are not accessible from your home network. If you're asking about "vpn windows," it might be related to setting up multiple VPN windows (i.e., multiple virtual private networks) for accessing different accounts or sites from different locations. This is often necessary when your home network is blocked by a firewall or when you need to access accounts on a remote network.