If you’ve tried to open an Excel file and been met with the dreaded extension not valid error, you probably have a corrupt workbook in your hands. It is common to get the common Excel xls and xlsx ...

1. Change the file’s extension (worked for most users ) Some users have fixed the issue by manually changing the file’s extension to various standard Excel file formats until they get the right one.

After opening the file in Excel Safe Mode, save it in a different format through File > Save As, selecting either .csv or .xls. Use LibreOffice to Re-save the File For those cautious about third-party ...

The first step to resolving the “ Excel file format or file extension is not valid ” issue is to verify that the file extension corresponds to the actual file format. Typically, spreadsheets created ...

You’ll see that the table in this step contains a column called Extension which contains the file extension for each file. If you filter this table – which will insert a new step at this point in the ...

When using MS Excel to store data for business purposes, it is important that the data is available when needed. However, corruption errors in an Excel file may prevent you from accessing the data and ...

Then, get a File object for a .xlsx file picked by the user with a HTML input=file control, and register it with duckdb. After that I run a query with an explicit call to read_xlsx, and pass in name ...

First, the file may actually be corrupt in which case I hope you have a backup! Second, the Excel file may be password protected. Power Query cannot connect to a password protected Excel file so ...