I've been using TurboTax for 28 years and it would not install this year for the very first time ever. I'm pretty sure it's a software issue. There should be absolutely NO need to change environmental variables to get a program to install!
Easy and successful installation is the most basic expectation that one can have of a program. There is something seriously wrong at the most basic level if this expectation is not met.
I have absolutely no problems with any of the other many (also much more expensive and complicated) programs that I have installed on my system running the latest version of Windows 10 with all pertinent updated drivers, etc.
