title: unlocking the system preferences is not working
body: <p>System Preferences is trying to unlock users &amp; Groups preferences
  Unable to open System preferences for the my MacOs High Sierra.</p>
  
  <p>sudo commands helps to provided the access to unlock the usergroups?</p>
  
  <p><a href="https://i.stack.imgur.com/IZTPy.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/IZTPy.png" alt="enter image description here"></a></p>