@user17598960542
Microsoft made the decision to end free technical support and security updates for the Windows 10, and that's why TurboTax Desktop 2025 will only run on Windows 11.
TurboTax Desktop is a Windows application, and like all Windows applications, it requires Windows components to run. It also saves your return files to your computer. So, if your Windows computer isn't secure, then there's not much we can do, other than stop you from running TurboTax on an operating system that it's manufacturer no longer supports. With TurboTax Online, our servers run and store the software using bank level security. But you still access it using a web browser, which like any other Windows applications, needs parts of the OS to run.
The Trusted Platform Module (TPM) chip was introduced in 2003 and is designed to provide hardware-based, security-related functions. The current version is TPM 2.0, which began to be included on computers in 2014 and even Windows 7 can use it (with an official patch). Windows 11 is the first version of Windows that *requires* TPM 2.0, which is why it can’t be installed on many older machines.
