
How is it possible that my serial number expired for the CS4 products I PURCHASED in full (not a subscription)?Īssuming you're using a valid adobe serial number (6 groups of 4 numbers), you have a mismatch between your installation file and serial number. They said they cannot help me on the phone, that I would have to get assistance through the forum online.


The only thing they said was that my serial number expired. I called Adobe Customer Support and they were extremely unhelpful. Why doesn't my serial number work anymore? How can I install the programs onto my new computer/ external HD? Click on OK to retry entering the serial number." The serial number I am entering is correct. However, when I try to install them, I get the following message: "The serial number you entered is not valid. I just purchased a new MacBook Air and would like to at least install Acrobat 9 on my new computer internal HD, and preferably install the entire CS 4 on an external HD (b/c there is not enough storage space on my MacBook Air internal HD). I purchased Adobe Creative Suite 4 Design Premium for Mac OS (disc installation version) back in 2009 and have had it installed on the same MacBook Pro for the last 8 years.
