Error TT414 migrated frm old to new computer,open 2018 return for updating-} "file created w ltr vers of TT than the 1 installed, must update to open file-but not avail??

[gowen]

An update for 2018 is unavailable, so how can the program be used (no updates are available before 2021 so you cannot edit any previous file you made (or did not file on time, for some people)

[NCperson]

@gowen the 2018 version of TT is no longer supported, so you can't download the updates from the TT website.  TT supports 3 years back, so 2022, 2023, and 2024.  (and of course 2025).  I suspect 2021 support is about to end. 

Even if you did not file on time, TT has made a business decision not to support these back years. 

Why would you need to update your 2018 tax return in any event? just curious.  

[VolvoGirl]

Why do you need to open a 2018 tax return file ending in .tax2018?  Sorry you can’t install old programs.  They only support the last 3 years.   If you can’t download or open the pdf file and only have the data file ending in .tax20yy you could try the TaxPrinter service (not connected with Turbo Tax) to convert a .tax file to pdf at

http://www.taxprinter.com

OR get a copy from the IRS -

http://www.irs.gov/Individuals/Get-Transcript

Even if you install or reinstall  2018 or prior from a CD you will not be able to update the program or download any state programs you need.  So you might not be able to even open the .tax2018 tax file.  And since you can’t update the program your return might not be the same as you filed.