Please read this complete Release Notes and instructions before upgrading.
Please follow the regular upgrade documentation for Windows or Linux
Upgrading any previous version higher or equal to version 11.8.
If you face the error message java.lang.IllegalStateException: Problem reading database configuration. org.hibernate.HibernateException: Dialect class not found: de.dal33t.powerfolder.A.L.C.B in the logs, please stop thee service, remove the line hibernate.dialect=de.dal33t.powerfolder.A.L.C.B from your Server Configuration File and start the service again.
Cluster: Running different versions on the servers in the cluster is supported but limited to version >=14.3.5
Downgrade Information (optional)
In case a downgrade to a previous version is necessary: