It is not possible to access two separate AWI-Jetty interfaces for versions 21 and 24 installed on the same device using one web browser.
There is an error message in the log:
[WARN ] NOLOGIN/- NOUI [com.uc4.ecc.framework.entrypoint.vaadin14.V14VaadinServletService] - Alien Session Detected
21.x, 24.x
Component: Automic Workload Automation
Sub-component: Automic Web Interface
There is a session cookie tied to the hostname.
To have both systems open with AWI-Jetty, you need to use another browser or open an incognito tab/window.
Otherwise, use AWI-Tomcat to open both systems in one web browser.