Adobe has retired the activation servers for CS4. Even if you have the original installation files, you may encounter errors when trying to verify your serial number.
Finding a legitimate download for Illustrator CS4 today is difficult due to its age and Adobe's shift to the Creative Cloud subscription model. adobe illustrator cs4 download
. While it is now considered legacy software and has been officially discontinued, some users still seek it for its specific workflow or to run on older hardware. Key Features of Illustrator CS4 Adobe has retired the activation servers for CS4