I work for a school system and some of our students chose to log in with a personal email instead of their school email which provides their license. The students are limited in what they can access. They do not have access to the C: to delete the contents of their OOBE folder. They also do not have acces to the task manager to kill the adobe programs. When I log in as the admin and delete the contents of the OOBE folder for them. Once they log back in, the folder contents recreate before they can open Adobe Creative Cloud and sign out.
The only fix I have found is to uninstall and reinstall Creative Cloud but doing that for 200 or more students is going to be rough. Why is the signout button grayed out? There has to be another fix for this.