Before you reconnect to the internet, you need to stop the software from "calling home."
🚀 Always keep a backup of your .dmg file. Adobe no longer officially provides installers for the 2020 version, making these standalone packages valuable for users with older hardware or specific workflow requirements. If you’d like, I can help you with: Finding the Terminal commands to block specific Adobe URLs Troubleshooting the "Installation Failed" error code 501
Go to System Preferences > Security & Privacy > Firewall . Add Illustrator to the list and select Block incoming connections .
Setting up to stop Illustrator from lagging
Double-click the downloaded Illustrator CC 2020 DMG file to open it.
If a separate folder exists for the "Adobe Illustrator" binary, drag it into the /Applications/Adobe Illustrator 2020/Adobe Illustrator.app/Contents/MacOS/ directory and click Replace . Step 4: Final Adjustments
Advanced users can edit their hosts file to block Adobe’s verification URLs, ensuring the pre-exclusive status remains permanent.