Can't join some friends party

[enekuntzisklap]

Some friends are playing a private match with no mods but when I try to double click on them in F10 for joining them, nothing happens. Any fix?

[HannesC]

Does the host have UPnP enabled/port forwarded? If yes, just ask them for their IP, and type connect IP:port in console.

[enekuntzisklap]

HannesC Thanks for answering
I tried but it's the same, nothing happens. I got UPnP enabled and port forwarding it's done.

[Dss0]

enekuntzisklap you do but are you the host? if your friend hosts the match he has to forward port 28960.