To run Illustrator CC 2021 smoothly, your system should meet these specifications: Illustrator Cloud Documents & the Version History Panel
Enhanced user interface for refining color palettes and a new Color Theme Picker to sample colors from existing images.
"Portable" versions of Adobe Illustrator are unofficial, modified versions of the software designed to run without installation, often from a USB drive. . These versions are typically created by third parties and may be unlicensed or "cracked". Key Features of Illustrator CC 2021 (v25.3)