internal exception java.io.ioexception an existing connection was forcibly closed by the remote host

Every server I join I get this error, internal exception java.io.ioexception an existing connection was forcibly closed by the remote host.

I have tried SOO many different things, by change all my video settings, making everything minimal.
I have even gone on my laptop (I usually play on my Desktop)
and instantly it did the same thing.
We have cleaned our computer and still nothing.
Is this common, and I don't want to hear an answer of changing the server idle timeout to 0, because that's not it.
And help is appreciated!