Hi Does anybody has experience with VPN/L2TP from a Windows XP Client to ISA Server ? I have this message in local Eventview: IKE security association negotiation failed. Mode: Key Exchange Mode (Main Mode) Filter: Source IP Address 213.3.165.130 = My IP from my ISP Source IP Address Mask 255.255.255.255 Destination IP Address 194.6.180.XXX = My ISA Server Destination IP Address Mask 255.255.255.255 Protocol 0 Source Port 0 Destination Port 0 IKE Local Addr IKE Peer Addr Peer Identity: Failure Point: Me Failure Reason: New policy invalidated SAs formed with old policy Extra Status: 0x0 0x0 Any Idea Kind regards Bertrand Roth