Adobe Acrobat licence

[Coimbra123]

I have Adobe acrobat professional loaded on my old computer. I have now bought a new computer and want to transfer it on the new computer and use the same serial number. When I enter the serial number I get the message that it's invalid. How can I transfer my licence from one computer to the other?

[Mylenium]

What version of Acrobat? What system? Was it an upgrade?

Mylenium

[Coimbra123]

It's the Adobe Acrobat Professional 10. My new computer has Windows 8.