This question already has an answer here:

Those of you have commented that you changed your OS, please tell us HOW you changed the OS to open in Illustrator in lieu of Acrobat. I've been working fine for four years and suddenly Photoshop decides to open vector smart objects in preview. #willadobeevergetitright

marked as duplicate by Billy Kerr, Scott adobe-illustrator Oct 4 at 15:45

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • 1
    If you need assistance with how your OS functions or changing an OS setting, you should seek help at SuperUser.com – Scott Oct 4 at 15:48