Do not allow saving an Excel spreadsheet

Question

Is it possible to not allowing saving an Excel (.xls) file? (Should also work in Numbers on OSX)

Answer 1

As in change it so it is read only, you mean? You can do that with a password if I'm not mistaken.

But disallow saving - I don't see the point - someone could always copy the file.

Answer 2

You could have a macro on the Before_Save event, but circumventing it only means disabling macros.

       ThisWorkbook.Close savechanges:=False

If you forced macros to be enabled to even view the content that might help, but won't ensure not saving. Chip Pearson's site has some interesting TimeBombRegistry code you might adapt