L2TP registry settings
Define VPN connection L2TP PSK Update registry HKLM/System/CurrentControlSet/Services/PolicyAgent/AssumeUDPEncapsulationContextOnSendRule 32-bit, value x02 This one might not be necessary HKLM/System/CurrentControlSet/Services/RasMan/ProhibitIpSec 32-bit , value 0 Restart computer https://windowsreport.com/windows-10-connect-l2tp-vpn-reg/