I'm trying to VPN to a clients server. Other users are doing it fine. I went through the connection setup wizard, and basically used these steps:
Then I allowed PPTP connections in my firewall. When I try to connect I get ERROR 800. I went into the connection properties, under networking tab, and changed the "Type of VPN" connection to PPTP instead of Automatic. After I did this I started to get ERROR 678.
So hopefully that sheds some light... Is there something else I have to enable in my firewall? It's a D-Link router, and under Virtual Servers list I enabled:
PPTP TCP 1723/1723