The Microsoft VPN client connects - most of the time. In this case we are working with a pair of Microsoft Surface units which can not seem to connect the VPN.
OpenVPN was my first thought on a client, but 'building' the configuration file is a bit convoluted.
Is there another software I could look at?
OpenVpn could be complicate if the users does not have admin rights in the computer.
If they are admin, is quite simple to install and manage.
There are a few ways to avoid that, for example:Using the OpenVPN service as a "proxy": http://openvpn.se/files/howto/openvpn-howto_run_openvpn_as_nonadmin.html Using a scheduled task: https://community.openvpn.net/openvpn/wiki/Nonprivileged
After test many options finally I decided to install OpenVPN MI GUI in the clients, easy and works very well.