Important: Before upgrading, complete all existing workflows, pending jobs, master pages, and custom UI changes.
No direct upgrade from version 10.1 to version 10.4 is possible. You must upgrade from 10.1 to 10.2, and then upgrade from 10.2 to 10.4.
All upgrades may take several minutes to complete.
Upgrading CENTRAL 10.1 to 10.2
Upgrading CENTRAL 10.1 to 10.3