OK, so I'm having the same issues as most of the people on this thread. Bought a new computer, and trying to install and activate my older copies of Turbotax, from 2015 through 2023. Everything works and is activated and loads my old tax forms, except 2019. I spent 1.5 hours on the phone with customer service today. Here's what I found out:
I asked customer service to check the activation codes (I actually have two), and he said both are fine to use, they are still in the system and "alive" to use.
They then claimed that they no longer support 2019 because it's out of date, which is just not right as they support back to 2015. In fact, on their website they have 2019 listed for download, along with my license codes that I purchased back in 2019. The downloaded software works fine up to the point of activation. 2015 through 2018 work fine, as well as 2020 through 2023.
2019 was the first year that they started using an activation codes and I suspect that there is some issue either with the backend verification on their end (like it no longer works)
The customer service rep said that there was a patch posted by Intuit to be able to use the software without the activation process at some point, but it was taken down by Intuit.
Additionally, there was a crack solution posted, but that whole website also has been taken down.
FYI, there's another thread on this exact topic with similarly angry people:
https://ttlc.intuit.com/community/taxes/discussion/i-need-to-activate-my-recently-purchased-2019-hom...
I suspect that unless a patch is sent out to eliminate the activation code process, or the technical crack solution is released, there's some technical issue on Intuit's back-end verification system that they're either unwilling or unable to fix.
