when you created a new VPN connection with Windows 7, 8 and 8.1 and connected it you was abel to resolve DNS names of the remote network.
With Windows 10 this does not work anymore.
I compared the VPN connection/adapter settings of both Win 8.1 and Win 10, they looks equal.
Also the status page of the connected VPN connection lists the remote DNS servers.
I could no compare the IPv4 and IPv6 settings due this problem: