The I18nModule configuration can be configured in the /olatcore/src/main/java/org/olat/core/util/i18n/_spring/i18nCorecontext.xml file. However, don't change things there if you don't know what you do. You can consider this configuration as the default configuration. To override, configure this bean in our custom spring config file.

Everything you normally have to change can be changed from the admin interface.

NOTE: The i18n system does not automatically propagate config changes to other cluster nodes when running OLAT in cluster mode. In this case you manually have to press the Emtpy Cache button on the language adaption start screen.