Docker: An error occurred trying to connect
<p>Installed Docker on Windows with 2 additional installs, Oracle VM VirualBox and Kitematic. I've disabled Hyper-V in my Windows 10 PC. Now the problem is I can't download any Docker images from DockerHub, not even I can run the command as</p>

<pre><code>Docker info
</code></pre>

<p>At both ends it shows the following error.</p>

<blockquote>
  <p>An error occurred trying to connect: Get
  <a href="http://localhost:2375/v1.21/info">http://localhost:2375/v1.21/info</a>: dial tcp 127.0.0.1:2375: ConnectEx
  tcp: No connection could be made because the target machine actively
  refused it.</p>
</blockquote>

<p>If I run it in Docker QuickStart Terminal it works, but not working in PowerShell or in MSBuild.</p>