Carl
Level 15

Get your taxes done using TurboTax

@lmroberts36 the updates are absolutely necessary and critical. They contain all the "fixes" to problems and issues that were identified with the program after it's initial release. Without the updates, chances are very close to 100%, depending on the complexity of your return, that the bottom line results of the return will be wrong. That could mean you're paying to much tax, or not paying enough which will cost you in interest and other underpayment penalties if past the filing deadline.  Even if due a refund, you could be "leaving money on the table". So the updates aren't just necessary, they're required in order to be sure of accuracy.

Have you tried installing on another computer and then installing the updates there? To me at this time, it's evident that it's not a program issue, but an operating system issue for you. If you're trying to install or even update TTX 2014/15 on Win 10, that "could" be an issue since Win 10 wasn't out in 2014. But that doesn't mean it's not possible. (At least, not yet.)