If the file does not appear when you open TurboTax, you can go to your Windows 10 search window in the lower left-hand side of your screen and type in *.tax2019, and the file should appear if you have saved it in TurboTax 2019. Hover your mouse pointer over the file name, and the sub-directory address of the file should appear. In earlier versions of Windows click the start button in lower left of screen and the search window will appear. Type in the *.tax2019, and when the file appears right click on the file name and left click on Properties to get the Location of the file.
