VPN 伺服器與 VPN 用戶端 %1 之間的連線已經建立，但是無法完成 VPN 連線。很可能是因為在 VPN 用戶端與 VPN 伺服器之間，防火牆或路由器並未設定允許 Generic Routing Encapsulation (GRE) 通訊協定封包 (通訊協定 47)。

A connection between the VPN server and the VPN client %1 has been established, but the VPN connection cannot be completed. The most common cause for this is that a firewall or router between the VPN server and the VPN client is not configured to allow Generic Routing Encapsulation (GRE) packets (protocol 47).