Seriously: Encrypt the file with something like PGP and don't let anyone
near your hard drive.

If someone can open your workbook, they can copy it. If you search the
archives of these newsgroups you'll find lots of suggestions for making
it harder, but nearly all of them can be defeated by any moderately
curious user who can find these newsgroups.

Using Windows/Office Digital Rights Management can also make it harder,
but it requires that your users are willing to use it as well.


In article ,
tofimoon3 wrote:

dear sir,with best regards,how can i protect the workbook and its sheetsfrom
copying by others.