How can I do my taxes using Turbo Tax Deluxe while not online on my windows pc?

[TurboTaxSusan]

You must be connected to the internet to use TurboTax Online Deluxe or the TurboTax app for mobile devices.

If you are talking about the French TurboImpôt De luxe 2024, you don't need to be online the whole time you use it, just when you are doing something that requires an internet connection (NETFILE, Auto-Fill, etc...).