I'm in Colorado. Just had this same problem with trying to E-file my Federal and Colorado State returns together. Tried everything in this forum. Finally ended up submitting a support ticket then calling Intuit. Spent and hour on the phone with a very nice lady. The one additional step we tried was to download a Turbo Tax 2019 super patch file (184Mb) which you can find by googling "manually update turbo tax for windows" Tried that (and a reboot, and running as administrator etc.) also but still didn't work. Finally we I suggested we try just doing the Federal E-File and that worked. So, this appears to be an issue with the state products. I see other links to a FAQ that currently has NY and MA state fixes. Here's hoping they add CO soon!
