I tried advice below after being reduced to tears with frustration because no password worked, couldn't access the password in keychain, had to keep force quitting TurboTax, couldn't get rid of the pop-up, thought I was losing my mind...
Here's what worked.
Search for keychain on Mac
Once there, search for Intuit keychains
DELETE the one or two Intuit keychain permissions/paths/whatever this garbage is
Now Turbo Tax is able to import again. What a colossal waste of a day this was.
Oh, and I was forced to create an ID to post this. And obscenities weren't permitted.
Good luck with this fun bug, everyone!
