And....what are you trying to do----did you get a letter from IL that says you still owe tax for 2017? It is far too late to file a 2017 IL to get a refund for that tax year. TurboTax saves returns for seven years, so your 2017 return is gone if you prepared it using online TurboTax.
If you still need to prepare and file a 2017 IL return, you could get the 2017 form from the state to prepare by hand, or you could seek local paid tax help. No refund will be paid; if you owe tax due for 2017 you will need to pay the amount shown on the tax form and then wait for the state to bill you for late filing and interest.
https://ttlc.intuit.com/turbotax-support/en-us/help-article/state-taxes/contact-state-department-rev...
**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.**
