Hmmmmm, that is not a Turbo Tax file or backup. Where did you get it?
To open a .taxbak File
Not using TurboTax. A tax data file can only be opened if it was created by TurboTax and has a file extension of .taxyyyy where yyyy is the tax year, eg .tax2018.
Only if you have the Taxback software. You cannot open the file in TurboTax.
