Update for me this year (since I started this thread) - I have a new PC with Win 10, and it works no problem now so far, including getting updates. Haven't done state yet but I think it'll be OK (the updates said it was updating state as well).
(Edit: I just did the state, and filed, and all was good)
One slight quirk is - I click to open TurboTax, it looks for updates, installs them, and then says "successful install", but then when I clicked OK TurboTax didn't open - the window just went away. I had to re-open it. It worked fine then though.
So I guess my tip for folks dealing with this problem is - try the "delete common folder" fix mentioned (I haven't tried that; don't need to now - thanks for that tip); seems like that's worked for a few people. If that doesn't work then tough it out until getting your next PC, and you may need to do the manual state download instead of having TurboTax software "fetch" it.
Wish Intuit would have fixed this, but oh well. Generally their software is good.
