Publish transport-level error

Publish transport-level error

I keep getting this error when i'm publishing

"A transport-level error has occurred when sending the request to the server. (provider: TCP Provider, error: 0 - An existing connection was forcibly closed by the remote host.)."

Anyone have an ideia on what is causing this?

I'm using version 7 and sql server 

At a first glance that looks like a network or firewall problem. Note that version 7 is really, really old and shouldn't be used if at all possible.