What issues are you having while downloading the software?
For installation issues, make sure you are following these points:
You have the administrator rights on the profile you are installing TurboTax on
You are not trying to install on a cloud
Turn off your antivirus software and Windows Defender , before installation
If the error persists, we suggest you contact our product support by phone.
Refer to What are the Windows requirements for TurboTax Desktop?
Thank you for choosing TurboTax.