[Cannot participate in multiplayer.]

Problem solved.

I turned off the application ExpressVPN and now I can play online.

If anyone else has the same problem, uninstalling the VPN related applications may solve the problem.

[Cannot participate in multiplayer.]

The second image shows "Connection failed" in a series of numbers and in Japanese.

[Cannot participate in multiplayer.]

Offline play is possible, but connecting to a friend's server will fail.
Also, connecting to general multiplayer servers is not possible.

 

OS: Windows 10 Home 64bit 
CPU: AMD Ryzen9 5900x
GPU: Nvidia RTX 3090

 

I would like to know the solution to enjoy multiplayer.

Attached is an image of the error message.

 

Thank you for your cooperation.