<p><a href="https://i.stack.imgur.com/IOowW.png" rel="nofollow noreferrer">looks like this</a>
using windows version 10,
docker for windows(docker verion) : 18.09.2</p>

<p>how to resolve this issue ?</p>

<p>Kubernetes should be running.</p>
<p>But check your cluster-info:</p>
<pre><code>&gt; kubectl cluster-info
Kubernetes master is running at http://localhost:8080

To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.
Unable to connect to the server: dial tcp [::1]:8080: connectex: No connection could be made because the target machine actively refused it.
</code></pre>
<p>That is reported both in <a href="https://github.com/docker/machine/issues/1094#issuecomment-460817882" rel="nofollow noreferrer">docker/machine</a> and <a href="https://github.com/docker/for-win/issues/2099" rel="nofollow noreferrer">docker/for-win</a> or <a href="https://github.com/kubernetes/minikube/issues/3562#issuecomment-457142656" rel="nofollow noreferrer">kubernetes/minikube</a>.</p>
<p>While the issue is pending, and if no firewall/proxy is involved, I have seen the error caused because <a href="https://stackoverflow.com/a/52313787/6309">the port is already taken</a>.</p>
<p>See also <a href="https://www.ntweekly.com/2018/05/08/kubernetes-windows-error-unable-connect-server-dial-tcp-16445-connectex-no-connection-made-target-machine-actively-refused/" rel="nofollow noreferrer">this article</a>:</p>
<blockquote>
<h2>Issue</h2>
<p>The reason you are getting the error message is that Kuberentes is not looking into the correct configuration folder because the configuration path is not configured on the Windows 10 machine.</p>
<h2>Solution</h2>
<p>To fix the problem, I will run the command below that will tell Kubernetes where to find the configuration file on the machine.</p>
<pre><code>Powershell
[Environment]::SetEnvironmentVariable(&quot;KUBECONFIG&quot;, $HOME + &quot;\.kube\config&quot;, [EnvironmentVariableTarget]::Machine)
</code></pre>
</blockquote>
