If you have the 2012 TurboTax software installed then start the program. Click on the File menu at the top left of the desktop program screen. Click on Open Tax Return. Browse to the location where you put the 2012 tax data file, which has a file extension of .tax2012.
Only the TurboTax software for the year of the tax data file can open the data file.
TurboTax no longer support tax years prior to 2015.
