I just pulled up Turbotax Desktop 2024, followed by Turbotax Business Desktop 2024. Both last used in April 2025. Both went through fairly lengthy updates. Upon running the application, a popup appeared advising of the end of W10 support, and stating "This change doesn't affect TurboTax Desktop 2024 or prior versions", and advising that TT2025 and beyond will _not_ be supported. The advisory was dismissable, and I had no trouble opening the last returns submitted.
JADP.
