Did you buy it in the store or at Costco Online? What kind of computer do you have? 2024 Turbo Tax Desktop Download System Requirements
https://turbotax.intuit.com/personal-taxes/cd-download/tta-system-requirements
Where is it getting stuck? Did you see this article? How to get started with the Desktop program, install and activate it
https://ttlc.intuit.com/turbotax-support/en-us/help-article/product-delivery/download-software-turbo...
If you are on Windows it needs Microsoft Visual C++ installed.
