Your network administrator might have ended the connection. Try rennecting again, or contact technical support for assistance.

This is the only error I get.. I do see the TermDD 56 but we are not using any XP machines and not at same time as connections dropping.  ALL connections will drop from the 2008 r2 server with the same error at the same time.  Except connections via admin logon.  Searching event logs has no real pointers other.  All windows 7 64bit clients.  Client can reconnect right away with no issue.