Connection to server is lost.

[XAN_]

I'm getting this error again. Whenever I try to join a server, it says "connection to server is lost". If I press the refresh button, no servers show up. I have seen many other people on the forums with this problem, but it remains unresolved. I've tried many suggestion in older posts, but they don't work.
I could play without a problem a month ago or so, but now I can't. I have both Warband and NW on Steam and none of them work.

 

[Jesse | Oasis-Hosting.net]

Had this error aswell.
I fixed it by using LAN instead of WiFi.
(So just plug your LAN cable in and select you wish to use that input)