Program ArSiVi

Hello,

My friend can't connect to any match. Even though I can join matches just fine, He gets to "Joining...3,2,1" and then, if we are in a party, the dialog just goes away and he stays at the main menu, or, if he is trying to join a game himself, it gives Error: 67 or "Connection Timed Out." He has never had any problems playing any other online games and he is also the only one that I know ho has this problem. We have also tried turning off the windows firewall entirely, and still the same error. Any suggestions?

Please help.

I didn't find the right solution from the Internet.

References:-
https://www.psyonix.com/forum/viewtopic.php?f=34&t=30152
eLearning Service Video

Thanks