To update the advanced settings of a CloudForms appliance you need to be logged in to the web interface of the actual appliance that needs updating. This is somewhat different to other general settings, which can be updated from any appliance or even from the appliance console.
“So what?” you ask. Well, things get complicated when you do not have access to the web interface. Perhaps it has not been enabled on one or more appliances in your cluster. Perhaps you are load balancing your web UI and are experiencing SSL certificate woes when trying to access appliance URLs. Or maybe, just maybe, you forgot to enable the Web Services role when upgrading from CloudForms 4.2 to 4.6 (CFME 5.7 => 5.9), effectively disabling authentication via the UI, like I may or may not have done…