Hello, attached filed was recovered from an USB drive, where it disappeared - even though it was saved. How do I repair this file to get it working again?
Did you try a flash drive recovery software to see if you can recover the Excel file from your USB drive? Unless it's been overwritten, it should still be recoverable.
it might be possible that your file is corrupt. Try to repair the file by "Open & Repair". To do this, File -> Open -> click arrow next to open button -> choose Open & Repair. You may also try LibreOffice or OpenOffice to open the file. I have seen great result with this.