How to protect excel sheet from being unprotected?

[Jonnny]

Hi,

I often protect the cells in excel and send it out to multiple users but when I receive response from the users, some of the files are unprotected and violated by the users.
I know you can unprotect it with some methods.
But is there a way to protect the excel sheet from being unprotected? At least from macro?

 

[James006]

Hi,

If you mean a really 100% protection with no potential violation ...
with Excel and VBA ... sadly it is not possible