macOS Catalina only supports 64-bit software. This means that older, "legacy" versions of Illustrator—such as or earlier—will not run on this operating system. Users must utilize Adobe Creative Cloud versions of Illustrator (typically version 24.0 and later) to ensure compatibility. 2. System Requirements & Installation Issues
If you are currently running—or are forced to run—, you have likely encountered installation errors, disappearing fonts, or unexplained crashes. You might also be wondering if you should upgrade to a newer macOS or stay on Catalina for legacy workflow reasons. adobe illustrator macos catalina
: These versions will not run natively on Catalina because it was the first macOS to drop all 32-bit application support. macOS Catalina only supports 64-bit software