Can not login to the server

When i ran command docker version, i always got following error.
I have installed the ToolBox1.8.3 on windows7.
Does anyone could give a help?

Get dial tcp ConnectEx tcp: No connection could be made because the target m
achine actively refused it…

  • Are you trying to connect to a TLS-enabled daemon without TLS?
  • Is your docker daemon up and running?