It is your responsibility to figure out which years you did not file tax returns. TurboTax cannot figure it out for you. TT has no way to know if you used some other software for a year when you did not use TT. Check your online account at the IRS or check the IRS for transcripts to see which years are "missing."
https://www.irs.gov/individuals/get-transcript
https://www.irs.gov/payments/your-online-account
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
