Try searching your computer for the file. Search on the entire C: drive (just for filenames, not file contents) for *.tax, if that is the drive you saved your tax files on before. Let the Search run, it may take a bit depending on the number of files.
When your tax file is found, be very sure to note the exact directory that it is in - Windows uses a lot of User\ and My Notes and My Documents and other folders so that the tax file isn't always where you (or TurboTax) thinks it is.
Once you have the exact file location, you can click on File in TurboTax, then Open Tax Return and click on the hard to see link Find a Tax File. On the next screen, enter the full path and filename. Once you have pulled up your tax return this way, TurboTax should remember its location. Also, check the recycle bin and your backups.
You can also try the solution offered in this Turbo Tax help article.
Error 102345 or Error 1932147737 occurs while opening a tax file.
https://ttlc.intuit.com/turbotax-support/en-us/help-article/diagnostics/error-102345-error-193214773...
@Bud10
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