When you use "application.session.host" in the client's admin url, in some environments there is no way to reach to the exact application node (with session created) to send a logout signal. Keycloak doesn't have inside "application.session.host" information about port number and it is impossible to reach the exact application server node. So... when your environment have more than one application server (wildfly, jboss, etc) listening using port offsets... Keycloak try to reach application.session.host (port 80) but it's not a valid endpoint. Is there a variable available to this (something like "application.session.port")? Thanks, -- Ariel Carrera