File|SaveAs|Tools (upper right corner)|General Options
Give it a password to modify (not open).

Users can supply the password (if they know it) or open it in readonly mode
(without the password).


Tanya508 wrote:

How do I password protect a document on a server so that you have to
enter the password to change the document, but the document can be
viewed without a password?

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Tanya508

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Dave Peterson