ipsec ike error 65535

hi i am seeking help with connecting to ipsec vpn


my vpn was working until i upgraded my macbook to High Sierra 10.13.14


now when i try to VPN i get this error "An unexpected error occured, Try reconnecting if the problem continies verify the setting and contact your administrator"



i checked the ppp.log and the last date was May 8th with an error IPSec connection failed <IKE Error 65535 ()xFFFF) Unknown error>


nothing really is showing up in system.log when i try to connect to vpn



i have other macbooks in my enviroment and they can connect via VPN, i reset the PR RAM and tried testing in verbose mode but stll same result


any help would be greatfully appreciated