I upgraded my computer from Windows 7 to Windows 10 to be able to install TurboTax 2020 on CD. It fails to install the program updates. Congratulations! You've created a product that doesn't install on any version of Windows! It suggested either my anti-virus was interfering with the install, or I needed administrator privileges. Both seem ridiculous since I've never had any issues with TurboTax 2016, 2017, 2018 or 2019. This issue never occurrence with any third party software.
Fortunately, I tried an alternate install. I downloaded the software from the site and ran it. It ran quicker than the software on CD. The software on CD took so long to startup, I thought it may have hung. Then it was able to perform the program updates.