2019 online prep and e-filing are closed. to prep a 2019 return you need to purchase the desktop software
the return must be mailed in so use a method where you get proof of delivery.
https://turbotax.intuit.com/personal-taxes/past-years-products
os requirements for 2019
mac high sierra 10.13 or later
windows 10,8.1,8.0. 7 service pack 1 or later
