Here is likely what is happening. Anyone who purchases the CD from a retailer is recommended to first download their software using the key prior to ever inserting the disk in a computer.
The likely scenario is that once the disk version installed as the first install, the key never has a chance to associate with an account and is used up. This is because it sits in the Turbotax Database as a record where the CD key exists, but no associated account is tagged to it. The download button on turbotax is a lookup function for the cd key, but does not have an if Boolean to check for an associate account. Despite how the error code reads and leads you to believe that it is associated, when it actually is not.
The following error will appear when trying...
"This license code has already been associated with an account. Please check that account and look for it in Downloads."
Please complain to Turbo Tax about this glitch so they post a fix. It's been happening for years.
