You need to have the file ending in .tax2018 or the pdf file saved on your computer or backup. Are you on Windows or Mac? Did you search your whole computer for all files ending in .tax? Look in the Recycle Bin or trash. Check in One Drive, Drop Box etc. it should be in your Documents then in the Turbo Tax folder. Check your backups.
If you don't have the main .tax file you might have one that starts with a Tilde sign ~ like
"~your name.tax2018". That file is if your computer crashes or your real file gets lost or deleted or corrupt so you can restore it.
Try this......start the program. Then go up to File-Open and see if it finds your file.
