I was getting error 1603 Windows Update Failed each time I tried to update TurboTax 2016 under Windows 10. I am running Windows 10. I tried the New Frame repair suggested but that didn't work. Finally, I went into Settings/System/Apps&Features/Program and Features or Control Panel\Programs\Programs and Features and then selected Turn Window Features On or off. In that box, I turned off Netframe 3.5 and Netframe 4.6. I rebooted the machine and Turbotax updated. After the Turbotax update, I restored the Netframe selections and rebooted the machine. I never had this problem before under previous Window operating systems. It's a pain but it worked for me.
