I've been battling this error for a couple of weeks and decided to take a wait-and-see approach by attempting to file every few days but kept getting the same error. Tonite I called the customer service line and, after trying several trouble-shooting items, I was instructed to uninstall TurboTax Deluxe 2019 and then I was sent a new download, which I accessed through turbotax.com. After re-installing and accessing my filing, I was able to successfully transmit the filing without incident! The representative was extremely helpful, patient and pleasant.
