A 2017 return cannot be e-filed. E-filing for 2017 has been permanently closed since mid-October of 2018. Your 2017 return has to be printed, signed and mailed.
When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s. Use a mailing service that will track it, such as UPS or certified mail so you will know the IRS received the return.
You can e-file a 2018 return. Since you are filing 2017 late, you need to use "zero" for the 2017 AGI when it asks for it. If zero does not work, then you will have to print, sign and mail 2018.
**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.**
