Trying to file 2017 state ct tax return?
Go to the CT website for the 2017 tax forms - https://portal.ct.gov/DRS/DRS-Forms/2017-Forms/Individual-Income-Tax-Forms
TurboTax does not support tax year 2017.
Make sure you have a copy of your 2017 federal return handy since you will need some information from it to prepare the state return.