Netcfg -u MS_L2TP
Netcfg -u MS_PPTP
Netcfg -l %windir%\inf\netrast.inf -c p -i MS_PPTP
Netcfg -l %windir%\inf\netrast.inf -c p -i MS_L2TP

https://www.google.cz/search?rlz=1C1CHBF_csCZ715CZ715&q=windows+8.1+vpn+error+609&spell=1&sa=X&ved=0ahUKEwie0K7qtZ3XAhUHF-wKHSEtBwoQvwUIJCgA&biw=1366&bih=662

 

 

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