Do you just get a blank box or white screen when you try to activate it? Or are you trying to enter it into the online version? Are you trying to install the CD on Windows or Mac?
How to activate the Desktop CD/Download program
https://ttlc.intuit.com/community/tax-topics/help/activating-turbotax-cd-download-software/01/852971
Blank Activation screen in Windows
How do I fix blank screens during activation or in-product purchases in TurboTax Desktop for Windows...
