macOS often blocks apps from unidentified developers. Open Terminal and type: sudo spctl --master-disable . Hit enter and provide your password.
If your Mac meets these requirements, you're ready to proceed with the installation. install adobe illustrator cc 2020 on mac pre exclusive
: Go to the "All Apps" tab. Find Illustrator and click the three dots ( ... ) next to "Install" or "Open." macOS often blocks apps from unidentified developers