I'm here in 2021 having the same problem. I have read probably ever single post and help form about anything even close to this problem for the pass 3 days now and all I've figured out is that I don't think I can fix this my self. I've done everything in my power I believe to fix this myself.
Here is all the info I have about my problem.
Everything says I'm up to date all automatic and manually updates and still can't transmit returns. I've uninstalled and reinstalled TurboTax 2020, Installed it on a new computer now pay twice for the transmit.
I've tried every troubleshooting post I've seen and nothings has worked.
Tried transmitting return for only federal still same thing.
I'm in Nebraska with only NE to submit tax info to and using the Deluxe edition for 2020.
I also have had two other famly members use, to my knowledge the same version, and on the same PC, just a month before me and it all worked fine.
I'm just exhausted at this point and immensely disappointed.
