Update: A little bit of bad news; some funny news; and then some tentatively good news:
Day before yesterday I spoke with a third TTax support rep. She was extremely helpful. She had lots of relevant ideas for me to try in getting past this problem of TTax getting stuck at the Sign-In screen. Then, on my own, I tried these, plus more.
** I stopped all possible (regular) programs from running, so there wouldn't be competition of access.
** I turned off my Firewall.
** I turned off my Anti-Virus software.
** I ran everything as Administrator.
** I tried a few other things without success.
One would think it would work then, but it did not.
Then the Funnyism:
** I tried to run TTax in Safe Mode, but Windows doesn't do it that way.
** I researched how to reboot my PC in Safe Mode. That part worked.
** In Safe Mode, I tried running TTax. It tried. Nope.
** Guess what: In Safe Mode you don't have access to the internet. Yet the whole TTax problem was that it thought it needed to Sign-In (which requires internet).
** So I laugh at myself for thinking that might work.
Then the tentative Good News:
** I used a completely different PC, installed TTax, and it worked. I've re-started multiple times, and it's always worked so far.
** It's going to be inconvenient to do my taxes on this other PC for many reasons. But I'm going to plough through. Wish me luck! (:-)
(Maybe) Final Thoughts:
** My original PC where TTax was having some problems runs Windows 10, whereas my other one where TTax is newly working runs Windows 11.
** I'm not at all convinced that the solution was just to run TTax on Win 11. (As said before, TTax had previously worked fine on my current Win 10 PC, including this year).
** There's no guarantee that this new installation will keep working, but I'm hoping for the best that it will.
** Since we don't know the actual cause of the problem, the best I can suggest is try another PC.
I want to sincerely thank all the TTax support reps and possibly many others behind the scenes. I'm very much convinced that *they* are sincere, and I appreciate their help. I look forward to using TurboTax for future years.
