Turbo Tax Business available for prior years 2016-2019?

[cvoegtli]

I need to file several years of back taxes for a C Corporation.   I see where to download 2020-2022 TurboTax Business.  And a reference to fact that "2019 and prior returns cannot be filed electronically".   This implies that I could be able to somehow BUY turbotax 2019 or earlier and use it to create the returns for those years and then paper file them.

Does anyone have a definitive answer as to whether you can even still purchase TurboTax Business for 2016 through 2019?  

(I can't find answer anywhere on the site, nor can I get through to a real person via phone to ask this.)
Thanks for any info.

[VolvoGirl]

Sorry no.  Not Turbo Tax .  They only sell and support the last 3 years.  Even if you found 2019 or older to buy somewhere you wouldn't be able to update it even if you could install it.