I downloaded a excel file from my gmail account attachment. When I downloaded it, the file showing without ".xlsx or .xls" extensions. I renamed it by adding ".xlsx" at the ending. and it works.
And when I downloaded the same file in other computer (which is of my colleague) it downloaded perfectly, i.e., with extension ".xlsx".
So is it a problem of my chrome or Microsoft Office or my Windows files or any other.
Please kindly help on this thing.