I managed to solve it. It turned out that Norton DNS resolved the vpn host name to an obsolete IP. On the old router I used Google DNS to resolve host names. I switched to Google in the new TP-LINK...

Model : Archer C2 AC900 Hardware Version : V3 Firmware Version : Archer C2(EU)_V3_160713 ISP : DIGI Magyarország (RCS & RDS ) I have difficulties to connect a PPTP VPN server with my new router,...