I didn’t realize it at first, but when I need it, I realize it gone.
For security reason, PPTP VPN connection eliminated on the latest Mac OS Sierra. There is no way Apple will bring it back, but fortunately, there’s an App for that. I recently evaluating a VPN client for Mac that supports PPTP and other methods as well. It’s Shimo VPN.
My initial impression Shimo VPN is really easy to use, fast and light.
It costs you $55 for a license, but if you feel that expensive, you can get it cheaper via deals promotion for a limited time. Also, if you feel $55 are costly, you can try to get it from SetApp, a subscription service for many apps at $10 per month.