The most secure way to install older versions is through the official Adobe Creative Cloud Desktop App.
| Issue | Solution | |-------|----------| | “Older version not showing” | Ensure your Creative Cloud app is updated to the latest version. | | Installation stuck at 30% | Close all Adobe background processes (e.g., CCLibrary, CoreSync) from Task Manager. | | Font issues after install | Reset font cache: C:\Users\[YourName]\AppData\Roaming\Adobe\Adobe Illustrator CC 2018 Settings\ | installer adobe illustrator cc 2018
If you see an error about “unidentified developer,” go to System Preferences > Security & Privacy and click Open Anyway . The most secure way to install older versions
During the download process (in the "Other Versions" window), you may see a gear icon or settings. | | Font issues after install | Reset
Below is the official method to install this legacy software.