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...
Thanks for the investigation.
I'm on macOS and not able to open the file in Notepad.
I also saw some solutions for repairing the file with Excel on Windows and I am not able to test those as well:
https://support.microsoft.com/en-us/office/repairing-a-corrupted-workbook-7abfc44d-e9bf-4896-8899-bd10ef4d61ab?ui=en-US&rs=en-US&ad=US
https://support.microsoft.com/en-us/office/repair-a-corrupted-workbook-153a45f4-6cab-44b1-93ca-801ddcd4ea53?ui=en-US&rs=en-US&ad=US
I'm on macOS and not able to open the file in Notepad.
I also saw some solutions for repairing the file with Excel on Windows and I am not able to test those as well:
https://support.microsoft.com/en-us/office/repairing-a-corrupted-workbook-7abfc44d-e9bf-4896-8899-bd10ef4d61ab?ui=en-US&rs=en-US&ad=US
https://support.microsoft.com/en-us/office/repair-a-corrupted-workbook-153a45f4-6cab-44b1-93ca-801ddcd4ea53?ui=en-US&rs=en-US&ad=US
Patrick2788 SergeiBaklan
Could you please test these solutions as well if you have access to a Windows-based device?
This file cannot be repaired in any way. Its contents have been overwritten completely by NUL bytes, so nothing whatsoever of the original contents is left.
- Then why does the file size seem normal?
Apparently because the existing contents have not been removed, but overwritten by bytes with value 0.
