Does this only happen if you try to join a specific server, or can't you join any servers? What happens exactly when joining a server? Do you get an error message? Or do you get stuck in the loading menu (in this case, what does the loading bar say)?
If you can't join any servers, it's most likely caused by a firewall or an antivirus program. Sometimes it's not sufficient to disable the antivirus scanners, you have to put the game explicitly on the exception list.
Eventually you can provide a log file, to do that, go to your game directory, open the "config.properties" file with a texteditor and set "game_debug_console" to true, then save the file, and run the game again. Try to join a server and wait at least 1 minute, then quit the game, and go to the "Logs" folder in your game directory. There should be a new log file now, please upload this file here 
The last reply was more than 365 days ago, this thread is most likely obsolete. It is recommended to create a new thread instead.
Don’t have an account yet? Create a new account now and be part of our community!
