title: It is required that your private key files are NOT accessible by others, when use SSH to connect with a Azure CentOS VM
body: <pre><code>    WARNING: UNPROTECTED PRIVATE KEY FILE!          
  </code></pre>
  <p>Permissions for 'D:\Windows10\azure\azureuser.pem' are too open.
  It is required that your private key files are NOT accessible by others.
  This private key will be ignored.
  Load key &quot;D:\Windows10\azure\azureuser.pem&quot;: bad permissions
  azureuser@XX.XX.XX.XX: Permission denied (publickey,gssapi-keyex,gssapi-with-mic).</p>