Turbo Tax downloaded to new computer can't open old file

[tomjenzen]

2024 return started on computer that no longer works. 2024 Turbo Tax file copied to new computer. Downloaded Turbo Tax program to new computer. Turbo Tax program will not open 2024 Turbo Tax file. Received message "Turbo Tax is already running under another account. Switch user and run Turbo Tax from the other account." 

[VolvoGirl]

I don't know about that message.  But here's some things to try.  Do you have the tax data file ending in .tax2024?  Can you start a new return?  Try closing everything and rebooting your computer.  Oh, and if you are on Windows try updating Windows.  

After you get the program installed or reinstalled the first thing to do before you open your tax return is to update the program and install any state programs you had. Then open your file. So you first might need to start a fake return to be able to download the state program (go to FILE - NEW). Enter some basic information, then go to the state tab and download the state program. Then try to open your existing return, go to FILE - OPEN