I've been avoiding the "creators" version of WIN 10, but bit the bullet and updated. The firewall is not acting the same as it was before the update and the VPN client doesn't maintain a connection. I found the update added another network connection and mucked up a few other things which I had to sort out, I disabled my old network connections and went with the new one the update created, which is what I think broke the VPN. I uninstalled the VPN client, downloaded and reinstalled it, which seems to have fixed the problem.
Just passing this on in case it helps someone else.