If you are searching for Adobe Illustrator CC 2015 in your Creative Cloud dashboard, you may have hit a wall.
If your search query leads you away from Adobe’s official servers to third-party "archive" sites, you are entering dangerous territory. Searching for- adobe illustrator cc 2015 in-
You can revert the modern Illustrator (2025/2026) to look and act like CC 2015: If you are searching for Adobe Illustrator CC