We have 1 Publisher and 2 Subscribers. Before the upgrade, the XML requests were sent only to the subscribers to this address: http://<CUCM_IP_ADDRESS>:8080/emservice/EMServiceServlet, and it always worked.
Now, any login request to the Subscribers returns the error code 7.
If we send that same request to the Publisher, it works ok! The successful XML responce is returned.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.