In , Adobe officially retired the activation servers for Creative Suite 3 (CS3). Because the software "phones home" to verify its serial number, users who tried to reinstall or move the program to a new computer found they could no longer activate it.

Look for "Adobe Illustrator CS3" or your Creative Suite version to view the 24-digit serial number. 2. Locate the Number on Physical Packaging If you have the original box or discs:

If you are still trying to retrieve an old number for your records:

Adobe Customer Care agents are generally unable to provide new CS3 serial numbers or activation codes, as the product is considered "End of Life". How to Find Your Existing Serial Number