So I also have exactly this problem, except that I couldn't even file my federal amended return. Did the same as tech support said: disabled my antivirus program, closed and reopened Turbotax but only got the message that Tax year 2023 transmissions are not available. Neither my federal nor my state (GA) amended taxes went through. Thanks for the info about March 14 - I'll also try again after then. Highly frustrating Turbotax - please get your #$%% together.
