When you upgrade Configuration Manager, plan for the changes that are required to install the new version, and the changes ...

When you upgrade Configuration Manager, plan for the changes that are required to install the new version, and the changes that the new version introduces. Changes in a new product version might require you to modify pre-upgrade configurations to support the upgrade, such as new prerequisites for site system roles. Also plan to modify post-upgrade configurations, which include the reconfiguration of some settings and the upgrade of Configuration Manager clients and Configuration Manager consoles. Learn more