When you download and install an Adobe Creative Cloud app, the Creative Cloud desktop app downloads and installs for managing your Creative Cloud apps. On older operating systems, these processes were handled by the Adobe Application Manager (AAM), which was replaced by the Creative Cloud desktop app.
If you’re on Mac OS X 10.7, Windows 7, or later and still have AAM on your computer, when you become a Creative Cloud member and download an app, AAM automatically updates to the Creative Cloud desktop app.
AAM does not auto-update to the Creative Cloud desktop app, or you receive the following error: “Browser doesn't know how to open this address, because the protocol (AAM) isn't associated with any program.”
An older version of AAM (version 18.104.22.1684) does not auto-update to the Creative Cloud desktop app.