A couple days after launching Adobe's Cloud Based Indesign, my photoshop CS4 asked me to enter my serial code. I did and I got this message. "The serial number you entered is not valid. Click OK to retry entering the serial number" The serial number I entered and rentered over and over is my registered number listed in my Adobe account.
Someone suggested I have someone at adobe take over my computer virtually so they can fix the problem. How can I make that happen?
Its because of two reasons.
1. You may have some issue with the hosts files on your machine.
2. Or, you may be entering the serial number under wrong setup file.