The first version to support Microsoft Windows.
Open Illustrator, go to Help > About Illustrator (Windows) or Illustrator > About Illustrator (Mac). The version number (e.g., 28.3.0) is displayed at the top of the splash screen. adobe illustrator versions list
The early years defined the vector graphics industry. Versions 1.0 through 10 were sold as standalone software. The first version to support Microsoft Windows