Can I use the TurboTax Deluxe edition key I purchased on a Windows 10 machine?

[ecasey]

For 2025 return.

[TurboTaxLiseD]

Yes, TurboTax 2025 will work with Windows 10. However it is not recommended because Microsoft has ended security and software updates for Windows 10. You can enroll in the Microsoft Extended Security Updates

Here are two short articles for your information: 

From TurboTax  How does the end of support for Windows 10 affect my TurboTax Desktop experience?

From Microsoft End of support for Windows 10

Thank you for choosing Turbotax