All servers in the farm running SharePoint products should have the same Automatic Update setting. If any server in the farm ...

All servers in the farm running SharePoint products should have the same Automatic Update setting. If any server in the farm gets updated automatically then they all should be at a schedule that is similar to the other farm servers. If there is a mismatch in farm server automatic update settings, a possibility of inconsistent updates can occur which can lead to rendering, request processing, or data loss/corruption issues.