Can an unused Quicken Premier 2019 CD be installed to extend a current subscription

Question

Ps56k2 · Answer

to clarify - 
if you bought a boxed version of Quicken - 
there should be an ACTIVATION card included inside the box..... if you just have the CD - then - out of luck - 
The key piece is - the Activation Code - which can be entered into a running version of Quicken... 
... Help --> Enter Activation Code

Sherlock · Answer

If the activation code has not expired and is not limited to new subscribers and the current subscription will expire within six months, the answer is yes.  If you haven't already, you may want to review:  https://www.quicken.com/support/how-do-i-manage-my-quicken-subscription