I'm not sure who you purchased a "used" CD from, but you got scammed.
TurboTax desktop software is sold to be utilized by one user on that user's computer(s) only. It is a violation of the end-user agreement to sell or purchase software that has already been registered on another computer.
You won't be able to e-file your return using this software.
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***
