Participant
February 24, 2025
Question
Serial number not valid for this product
- February 24, 2025
- 2 replies
- 310 views
I own Adobe Indesign CS4 since 2011, and have been running it frequently on the very same PC since then. Today, I cannot open my InDesign, and I get a prompt to enter serial number. I do enter the serial number 24 digits found on the back of my installation disk, but I am told that the serial number is not valid, BUT IT IS! The last time I ran InDesign was sometimes last month.
Note I am not installing the program just trying to open it. It is already installed and activated.
What's the problem, and what can I do?
Windows 10 auto-updated recently, if that has something to do with my problem.
