Demo: Set a password to open or modify a workbook, document, or presentation

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You can encrypt Microsoft Office files to help prevent unauthorized people from opening a workbook, document, or presentation. Watch the demo to see how easy it is to set a password to help you control who can open or modify the Office files you create.

How to do it (text version):

Applies to:
Excel 2007, PowerPoint 2007, Word 2007