What Can I Do If a Message Is Displayed Indicating That the VPN Connection Does Not Exist After Negotiation Policies Are Modified?

This problem is caused by the page refresh interval.

When you modify the advanced settings, the system first deletes the VPN connection and then creates one. If the page contains the message indicating that the connection is being deleted or created displays for a short period of time, do not create the same connection (with the same local subnet, remote subnet, and remote gateway) again.

If the page remains in the connection deleting or creating state for a long time,submit a service ticket.