HELP!!! Server Problems

[Brendarth]

When I start my Attack of the B-Team server it is fine and works well. However when I try to join it says badlogin on the screen. I checked to make sure and the ip I entered was correct. Does anybody know how to fix this?

[KitsuneX]

Some weird issue which i never had in all my time hosting servers. The only quick solution i could find is putting online-mode to false.
Beware that this disables the authencation check for accounts (cracked accounts may join).

[arriej]

Try rebooting the server. Relog on the client and reboot the client. 

[DoomGiver32]

I believe this'll happen when your login info gets kinda mixed up in the launcher. Restart your client, AND restart the launcher (DON'T just exit the game, and restart it, close the entire launcher so nothing relating to the technic pack is open, then restart from there). Usually that fixes it for me.

 

DO NOT put your server in offline mode, unless you are absolutly sure no one, ever, can access the server except those you want to.