You can't open a pdf file in the program. You need the file ending in .tax2023 to open in the 2023 program. Can you find those files? If it transferred into 2024 ok they should be on your computer. They should be in your Documents then in a Turbo Tax folder. Or search your whole computer for all files ending in .tax or .tax2023. By the way the Business files and y our personal return files end in the same .taxyyyy. So you have to know which kind it is. It usually says in the name of the file.
If you don't have the main .tax file you might have one that starts with a Tilde sign ~ like "~your name.tax2023". That file is if your computer crashes or your real file gets lost or deleted or corrupt so you can restore it.
If you can open a 2023 tax return you can save it with a new name, go up to FILE-Save As and give it a name you will know and where it is.
