[switch2] “Could not establish network communication with server.”

[WujekPawel]

I can’t join any server. I keep getting the message: “Could not establish network communication with server.” It happens every time, no matter which server I try to connect to.

[BlueTemplar]

Are you really sure it's literally no matter which, even the big dedicated ones ?

Does the ping line says «Cannot reach» ?

It might be because, (from my experience on PC, rather than Switch), since matchmaking through Steam was added as an option, a lot of people do not bother to properly set up port forwarding. (Even though you might not need it with IPv6 ??)

Try to check if there are any servers where the ping line doesn't say «Cannot reach» (after «calculating»). (If you do not find any, the networking issue is more likely from your side.)