I bought Flash CS 6 around 2 years ago (it was an update from Flash CS4 to Flash CS6) and today I tried to install it on a new Windows 8.1 PC.
I installed Flash and entered my serial and got an error "Serial Invalid".
I already tried this Adobe fixes but none worked: https://helpx.adobe.com/creative-suite/kb/invalid-serial-number-cs4.html
I paid a lot of money for the software.
What to do now?
Error "The serial number is not valid for this product" | Creative Suite
Error unable to validate serial number | CS6