In the app section of your Creative Cloud desktop app click on the “V” next to the app’s (Illustrator) name and choose the “Uninstall” option from the pull-down menu that appears. If trashing preferences does not work then you can try uninstalling and reinstalling Illustrator in the following manner:

The advantage of manually deleting preference files in this manner is that after you’ve reset up the program (make sure that no document window is open) to your liking, you can create copies of your personalized “mint” preference files (make sure that you quit the program before copying them-that finalizes your customization) and use them in the future to replace any corrupt versions you may need to delete. When Illustrator is next launched it will create new preference files and the program will be restored to its defaults. Within the Library folder find the folder called Preferences and within it find the folder called “Adobe Illustrator Settings” (earlier versions of Illustrator might just say “Adobe Illustrator”) and the file called “” and delete both that folder and that file. “Library” will now appear within the Home folder. With the Option Key pressed choose Library from the Finder Go Menu. To access it make sure that Illustrator is closed and click on the desktop to launch a Finder Window (Command-N).With this window in column view follow the path User>Home folder (it’s the folder with an icon that looks like a house-it may have the user’s name rather than “Home”) and click on the Home folder. The User Library folder in which Illustrator’s preferences are stored is hidden by default on most Macintoshes. The first thing to try is to trash your Illustrator preferences to make sure that the program is back to its factory defaults.

Adobe illustrator 2015 keeps freezing