Solving the forcibly closed connection
Statement of problem
Some hubs (Outdated hubs) have problems with the new connection types(NMDC2) and when you connect to such hub you get "An existing connection was forcibly closed by the remote host.", because hubs consider your $MyInfo for invalid.
NOTE:This is solution only for the outdated hubs problem.You can get the same message for different reasons.
You must use the old connection types(NMDC1) (and not use emulation for now).To change your current connection type:1. Go to Settings (General tab).
2. Select "Connection Type (old DC++ method)" and choose your connection.
Here's an example: