Have been through system preferences/users and groups/login items and it's not listed
added the app and deleted, still opens automatically
any ideas?
Open Creative Cloud desktop application, click on the Settings button at the right top corner, go to Preferences -> General Tab -> Settings and uncheck "Launch at Log in" option.
Refer: https://forums.adobe.com/thread/1303287?tstart=0
Regards
Rajshree