FIXING of * could not Deliver invitation *

[The_Golden_Tenno]

Hello there .. 


-- i came here to share something happened with  me ,  So a few days ago i have faced a weird problem with joining  any public matches  and i could not Invite or be invited by anyone  and i was so frustrated , i tried Ports forwarding , redownloaded the game, installed a new windows and made Factory reseting for my router , Honestly i have tried many things , but non was working !, But suddenly and by coincidence i could find out that when i disable * Nvidia PhysX Effects option *  i get no more * could not deliver invitation error * ... so i hope  disabling this option can fix it for u guys too . 

Edited July 15, 2016 by The_Golden_Tenno