@goyanks The license codes began with 2019---earlier years do not have a code. The IRS and TurboTax save returns for seven years. You should save your returns as pdf's so that you can access them from your own hard drive. We see a lot of users who forget to do that and then they forget how to access their multiple online accounts.
If you used the CD/download you do not need the actual software on your hard drive if you saved the return as a pdf. You can open a pdf without the software. If you are trying to open a tax file, then yes, you need the specific software for the specific tax year.
SAVE YOUR TAX RETURN !
EVERY year before mid-October you should save a copy of your tax return as a pdf and print a copy of it for your records. That way you will not be searching online frantically when you need it for a lender, FAFSA forms, your next tax return, etc.
https://ttlc.intuit.com/questions/1900937-why-should-i-save-a-pdf-copy-of-my-return
https://ttlc.intuit.com/questions/1899779-what-s-the-difference-between-the-tax-data-file-and-the-pd...
https://ttlc.intuit.com/questions/1912466-how-do-i-save-my-return-as-a-pdf-in-the-turbotax-software-... •
https://ttlc.intuit.com/questions/1912533-how-do-i-save-my-return-as-a-pdf-in-the-turbotax-software-...
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