If you are on a Mac, you just set the System Preferences > Language to a preferred language you have installed. Close the System preferences. If asked to restart, just click Don't Restart, Illustrator will start up in the selected language.
If you are on a Mac, you just set the System Preferences > Language to a preferred language you have installed. Close the System preferences. If asked to restart, just click Don't Restart, Illustrator will start up in the selected language.