Adobe Illustrator CC Portable is a "cracked" or "ripped" version typically found on third-party sites. It allows users to run the program from a USB drive or a single folder without installing it on the host operating system.
If you need to use Illustrator on multiple devices or on the go, Adobe provides legitimate ways to do so through their Creative Cloud subscription service Multiple Installations: Adobe Illustrator CC Portable
While the portability is tempting, the downsides often outweigh the benefits: Adobe Illustrator CC Portable is a "cracked" or
The idea is tantalizing: a full version of Illustrator that fits on a USB flash drive, runs without installation, leaves no traces in the Windows registry, and works on any computer—whether it’s your office PC, a library terminal, or a friend’s laptop. Adobe support will laugh you out of the
Adobe support will laugh you out of the chat room if you mention a portable version. If your file corrupts or your USB drive fails mid-project, you are entirely on your own.