TurboTax online and e-file for 2019 ended on Oct 15, 2020. 2019 (and earlier tax years) can now only be completed using the CD/download software installed on a Mac or Windows computer. The return must be printed, signed and mailed.

2017-2019 software can be purchased here:
https://turbotax.intuit.com/personal-taxes/past-years-products/

Do you know if there may be a free way to file my 2017, 2018 and 2019 taxes by chance? 

Download blank form form the IRS site and fill them out by hand - the old fashion way.

https://apps.irs.gov/app/picklist/list/priorFormPublication.html

Thank you 

2017

https://www.irs.gov/pub/irs-prior/i1040gi--2017.pdfhttps://www.irs.gov/pub/irs-prior/f1040--2017.pdf

https://www.irs.gov/pub/irs-prior/f1040a--2017.pdf

https://www.irs.gov/pub/irs-prior/i1040a--2017.pdf

https://www.irs.gov/pub/irs-prior/f1040ez--2017.pdf

https://www.irs.gov/pub/irs-prior/i1040ez--2017.pdf

2018 Form 1040, Schedules and Instructions

https://www.irs.gov/pub/irs-prior/f1040--2018.pdf
 https://www.irs.gov/pub/irs-prior/i1040gi--2018.pdf
2018 Tax and EIC Tables https://www.irs.gov/pub/irs-prior/i1040tt--2018.pdf

IRS 2018 Schedules 1 thru 6 (only if needed)
Sch 1 : https://www.irs.gov/pub/irs-prior/f1040s1--2018.pdf
Sch 2 : https://www.irs.gov/pub/irs-prior/f1040s2--2018.pdf
Sch 3 : https://www.irs.gov/pub/irs-prior/f1040s3--2018.pdf
Sch 4 : https://www.irs.gov/pub/irs-prior/f1040s4--2018.pdf
Sch 5 : https://www.irs.gov/pub/irs-prior/f1040s5--2018.pdf
Sch 6 : https://www.irs.gov/pub/irs-prior/f1040s6--2018.pdf

2019

2019 Instructions

 https://www.irs.gov/pub/irs-prior/i1040gi--2019.pdf

1040  https://www.irs.gov/pub/irs-prior/f1040--2019.pdf

1040SR  https://www.irs.gov/pub/irs-prior/f1040s--2019.pdf

2019 Schedules 1-3

https://www.irs.gov/pub/irs-prior/f1040s1--2019.pdf

https://www.irs.gov/pub/irs-prior/f1040s2--2019.pdf

https://www.irs.gov/pub/irs-prior/f1040s3--2019.pdf