And the .tax file ends in the right year like .tax2019, .tax2018, etc? What happens when you go up to FILE - OPEN in Deluxe and try to open it? Any error message? Can you start a new return in Deluxe?
After you get the program reinstalled the first thing to do before you open your tax return is to update the program and install any state programs you had. Then open your file. So you first might need to start a fake return to be able to download the state program (go to FILE - NEW). Enter some basic information, then go to the state tab and download the state program. Then try to open your existing return, go to FILE - OPEN
