The File Format And Extension Of !!top!! Download.xls Don't Match -

Several factors can trigger this specific error, especially with files downloaded from the web or generated by third-party software:

A file is in a different format than its extension indicates in Excel Several factors can trigger this specific error, especially

If a file was manually renamed with the wrong extension (e.g., changing data.txt to data.xls ), Excel will flag the discrepancy. Step-by-Step Solutions changing data.txt to data.xls )