In SQL 2012, I am not able to reconnect a query when the connection is lost. To reproduce, run a query and then break the connection (either leave the network or let it set for a while). When you try to run it again, you get "TCP Provider error - an existing connection was forcibly closed by the remote host." That is fine and expected, excpet I cannot reconnect (Query -> Change Connection -> Connect is greyed out and disabled).
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Steps to Reproduce