Hi,
Was it prepared in Free Edition and access has now expired?
https://ttlc.intuit.com/questions/3355524-when-does-access-to-my-prior-year-turbotax-online-returns-...
If so, we can tell you how to pay for a PLUS upgrade (19.99) in the SAME account to unlock all prior returns in that account.
What about 2018? Have you already started a 2018 return or have you already filed a 2018 return?
Be aware there's a free option if a tax return transcript would suit your purpose. You may be able to immediately download a prior-year return transcript at this IRS website at the link below. If you don't qualify to open a free IRS account there, you can order one to come by postal mail, which normally takes 5-10 calendar days.
http://www.irs.gov/Individuals/Get-Transcript
Please refer the following article to see how to download prior year returns prepared in TurboTax Online -
https://ttlc.intuit.com/replies/5574744
Hope this helps!
