xlsx and xlsm files return badzipfile: file is not a zip file

Question

I\'m trying to open both an xlsx file and an xlsm file both give me the same error

badzipfile: file is not a zip file

here is wh

Answer 1

In my case I received this error because I was reading a very large file that I had just downloaded. I copied it to another location before it had finished downloading and so got the error when trying to read an incomplete/corrupt file.