The new OS of Mac, MacOS Sierra will be released in Sep.21.
As we announce for a while, PPTP connection type,a type of VPN connection will be unavailable in this version of Mac OS and the new version(iOS 10) of iOS(iPhone/iPad) released the other day.

Be prepared for the deletion of PPTP VPN before upgrading to iOS 10 and macOS Sierra
https://support.apple.com/ja-jp/HT206844

We provide the connection by PPTP type as a connection service(VPN connection ) from off- campus however,we start the trial provision of connection service called "IKEv2" to support the PPTP in the above version.
VPN connection of IKEv2 type will be available with Mac/iPhone/iPad or Windows terminals.Plrase refer to the following link of IIMC for the use.

http://www.iimc.kyoto-u.ac.jp/en/services/kuins/vpn/use/ikev2.html

It's unfortunate to announce that IKEv2 type will not be provided for a while for PPTP-VLAN fixed connection (connection to the specified labo) users.

Please consider carefully about the above upgrading.

⇒ IKEv2 VLAN fixed service had started. (Apr.1, 2017)
http://www.iimc.kyoto-u.ac.jp/ja/whatsnew/information/detail/170331054171.htm