If you down loaded the .tax2019 data file yu would need to install the 2019 desktop version of the software on your computer.
If you filed with the online version the you must amend online. Even with the desktop software you would probably have the same results if you followed the procedure to amend online and are actually amending.
What are you trying to change? What prevents you form making the change - error message?
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
