When QuickBooks program is installed you can activate it by registering online.When QuickBooks installation is done, change your license number for a new one and product code after the trial period.So QuickBooks installation is restricted to a computer in which the license number and product code do not match that you have entered during an installation.Every QuickBooks program is specifically tailored to a unique license number and product code. There is also a 6-digit code that indicates the product code. The code signifies the product license number. On the QuickBooks, CD purchased you can view a 15-digit code.The below-listed steps can be followed in registering through license number and product code: Using Product License Number and Product Code Either through online registration by using Product License Number & Product Code, or,.There are few ways that can be followed to validate and register QuickBooks software: If you have QuickBooks installed on your computers and if the trial period of the software is going to expire then there is a solution to your problem which will benefit you to use QuickBooks. Chat Now How to Activate QuickBooks Using Product License Number and Product Code?