Why don't you rename them with a different extension, eg .xyz instead
of .xls (Excel will warn you about doing this, but just click ok).
Other users won't be able to open them by double-clicking - they will
have to open Excel first and then use File | Open, but if they don't
know that .xyz (or whatever) is an Excel file then why should they try
this?

Hope this helps.

Pete

On Jul 20, 6:46 pm, GEM wrote:
I have a directory with many spreadsheets in it. Other users can view these
spreadsheets. Can I block the access to one or more spreadsheets?