How to Solve Excel Cannot Open the File … Because the File Format or File Extension Is Not Valid.
How to Solve Excel Cannot Open the File … Because the File Format or File Extension Is Not Valid. Did you get an error message of ‘Excel cannot open the file **.xlsx because the file format or file extension is not valid’ while trying to open a file? Quick fixes and advanced solutions are available here to fix this…
![Excel Tutorial: Excel file extension xls, xlsx, xlsm, xlsb, xps, pdf [Tutorial]](https://i.ytimg.com/vi/GoL8UDayNy8/maxresdefault.jpg "Excel Tutorial: Excel file extension xls, xlsx, xlsm, xlsb, xps, pdf [Tutorial]")
