If you have bought TurboTax Desktop, you will be asked for the licence code when you install the software. Please see this TurboTax FAQ for more information on the licence code: Where is my TurboTax licence code? You can download the current version of TurboTax Desktop edition here: Choose the current TurboTax Desktop edition you need (for Windows). You can download older versions of TurboTax Desktop edition here: Where can I download the Desktop edition of TurboTax?
If you are still not able to resolve your code issue, please contact our phone support team.