If you have installed Appeon 2016 or a later version, you can upgrade to Appeon PowerServer 2020, but you cannot upgrade from Appeon 2015 or an earlier version. If you are using Appeon 2015 or an earlier version, uninstall it and then install Appeon PowerServer 2020.
Note that applications deployed with the old version and the demo applications must be redeployed with Appeon PowerServer 2020 after the upgrade.
Before upgrading to Appeon PowerServer 2020, upgrade the system environment as required in Installation requirements.
In addition to the system environment requirements, you should meet the installation prerequisites listed in PowerServer new installation before upgrading each component.
