macOS often blocks apps from unidentified developers. Open Terminal and type: sudo spctl --master-disable . Hit enter and provide your password.
Based on the phrasing "pre exclusive" (likely a typo for or "M1/M2 Pre-Silicon" ), the following is a detailed technical write-up regarding the installation of Adobe Illustrator CC 2020 on macOS. install adobe illustrator cc 2020 on mac pre exclusive
| Step | Action | macOS Compatibility | |------|--------|---------------------| | 1 | Download genuine CC 2020 installer (Adobe official archive or backup) | Works up to macOS 10.15 Catalina | | 2 | Disable SIP (System Integrity Protection) – often required for older installers | Terminal recovery mode | | 3 | Run the Install.app | Needs Rosetta 2 on M1/M2 Macs | | 4 | Sign in with Adobe ID (once) | Online required at activation | | 5 | Apply license key or use a valid CC 2020 serial | ✔️ | | 6 | Block Adobe validation servers via hosts file (if avoiding cloud re-check) | Optional | macOS often blocks apps from unidentified developers

