How do I obtain a Microsoft Key number Tags: Security Computers Microsoft Windows XP Last response: July 10, 2010 5:08 PM in Windows XP Share Terry Headley July 10, 2010 4:27:57 AM How do I obtain a Microsoft 25 caracter product key number for my computer? More about : obtain microsoft key number soundguruman July 10, 2010 6:34:52 AM your computer may have a label with the number on it. Your XP system disk (if you have one) comes with the number. m 0 l Anonymous a b 8 Security July 10, 2010 5:08:10 PM Magic Jelly Bean Keyfinder m 0 l Can't find your answer ? Ask ! Publish Read discussions in other Windows XP categories Configuration Customization Drivers Security Video !