This is an old thread that transferred into this new forum. The download version for TurboTax 2016 can still be purchased directly from TurboTax at this page:
https://turbotax.intuit.com/personal-taxes/past-years-products/2016/
The 2016 return cannot be efiled. It has to be printed, signed, dated, and mailed.
Minimum system requirements for Windows version:
https://ttlc.intuit.com/community/system-requirements/help/minimum-system-requirements-for-turbotax-...
Minimum system requirements for Mac version:
https://ttlc.intuit.com/community/system-requirements/help/minimum-system-requirements-for-turbotax-...
