@SternSteve121 TurboTax Desktop is run on your computer and stores files on your storage devices. Since Microsoft is no longer going to support Windows 10 (or Windows 8, or 7) with security updates, we can't risk having our customers entering their sensitive tax data on a computer environment that is no longer secure. That's why we are dropping support for TurboTax Desktop on Windows 10.
TurboTax Online runs and stores data on our servers, which are run at the same level of security that banks & other financial institutions use. Because it's browser based, you will still be able to use TurboTax Online on a Windows 10 computer if you're using a browser that still supports Windows 10, though we don't recommend it.
Another option is to use the TurboTax mobile app on your iOS or Android device. The mobile app uses the same servers as TurboTax Online.
