title: Docker pull gives error unkown blob for microsoft/windowsservercore
body: <p>I've mac OS as my host operating system and trying to pull an windows image microsoft/windowsservercore . While downloading it gives unknown blob error.</p>
  
  <p>Docker version is 17.03.0-ce and shows OS/arch as linux/amd64. Would it be helpful if I change the  OS/arch similar to the below: 
  <a href="https://i1.wp.com/blog.docker.com/wp-content/uploads/docker-for-windows-switch.gif?zoom=1.25&amp;w=1140&amp;ssl=1/" rel="nofollow noreferrer">https://i1.wp.com/blog.docker.com/wp-content/uploads/docker-for-windows-switch.gif?zoom=1.25&amp;w=1140&amp;ssl=1/</a></p>
  
  <p>If so, could some one help me on how to switch to windows container from MAC </p>
  
  <p>Thanks in Advance</p>