So I finally was able to transmit. But only after the support person got me up and running on a Windows machine I had around the house. Once I had the program installed onto Windows and the additional states loaded, the transmission step was over and done in 30 seconds. Clearly some MAJOR work needed on their Mac software to deliver on their promises. I spent over 10 hours yesterday trying to transmit and 4 of those hours was with their support.
In case it helps, other the support person said that they have been having a LOT of these Mac issues and that it is is different each time. Sometimes a complete uninstall/reinstall helps. Not just delete the App file but removing all of the system files on the computer. I couldn't find a good list of everything, but support directed me here: https://ttlc.intuit.com/community/installing/help/remove-uninstall-turbotax-for-mac/00/26050
I was on Mac Mojave. I had one large pending system update yet to install that I thought was the problem, so you could try that. Ultimately, it did not resolve my error though. I did the full uninstall/reinstall on MacOS 10.14.6 - fully updated. The support person said do NOT update to Big Sur - they are having TONS of problems with Big Sur despite claiming their software works on that platform.
What a nightmare. Maybe they should just go to 100% web based?
