When the Radius user tries to connect to the GVC the push notification is sent to the Authenticator App, once the user approves it the GVC gets disabled automatically.
*In GVC logs we can see the error "The downloaded policy configuration contains no destination networks".

*Check the GVC settings.
*In advanced section see what group is added. Ex:- Trusted users.
*Go to user settings>Local User groups.
*Edit Trusted users.
*Go to VPN access.
*Add LAN subnets.
*Now try to connect to the GVC the Radius users will be able to authenticate and connect to the GVC successfully.