The 2024 tax data file, which has a file extension of .tax2024, can only be opened by the TurboTax 2024 software installed on a personal computer.
If you paid the TurboTax online account fees for the Deluxe online edition, then contact TurboTax support as they may be able to push a 2024 desktop installation file to your download account at no charge.
See this TurboTax support FAQ for contacting support - https://ttlc.intuit.com/turbotax-support/en-us/help-article/account-management/turbotax-phone-number...
Support can also be reached by messaging them on these pages https://www.facebook.com/turbotax/ and https://twitter.com/TeamTurboTax