Forum Discussion
Excel cannot open the file 'Vocabulaire.xlsx' because the file format or file extension is not valid
I tried many online tools I tried solutions like zipping, etc. I tried solutions like changing the extensions I tried converting to other formats I didn't try the permission solution as I'm on m...
If make .txt extension and open in Notepad - nothing within file except a lot of not-printable characters. Afraid it's corrupted.
- Already opened and yeah, many zeros like a binary file.
