I too tried to file last night. My husband deceased during 2023 so I thought it might be due to that. At first going in to fix the error R0000-058-01, it said they couldn’t find him, and then it said our AGI didn’t match last years. I had reviewed all of this and my taxes are using standard deduction so very simple and found no errors. I didn’t pay to have the audit help if needed. I refiled an hour later and then got the xml error result. I have to wait till the holiday is over and supposedly they are going to fix this on their end. I found this years tax program to be very unfriendly and frustrating that I couldn’t connect to last years taxes. I will f/u with this after 2/23/24.