When breaking changes are introduced in a Kantega SSO version, you will have to run an “Update of config” in the Configuration status page. If you encounter problems with your instance during update of config, you can come back to a stable state by reverting Kantega SSO Enterprise to the previous stable version. When performing a “normal” upgrade between versions where no config migration was needed, you may simply uninstall the given version and install the previous without any worry.
See the guides below for downgrading from a breaking change, or for a “normal” downgrade.