I upgraded my Mac at the weekend to Sierra, which went beautifully. Fast and no problems at all. Until this morning. This morning I went to connect to a customer VPN and it has disappeared from my list of VPNs on my Mac. On further checking I realised that customer ran their VPN as PPTP and PPTP is no longer supported as a VPN option on Mac OS.
I can use 3rd party VPN software and I guess removing it was Apple’s best option – leaving it in place but disabling it would have just led me into trying to make it work not realising it was no longer supported. Still a warning pre-install of “if you upgrade the following services and applications will no longer work” would have been nice if a bit much to ask for.
Consider this your warning*
*And yes I know PPTP isn’t secure and the customer shouldn’t be using it but that one isn’t my decision.