
Review-Protect Document so that you can reach the menu for Security to create the password For users of Word for Mac 2016 & Office 365 Word-Preferences–Personal Settings-Security–Password to Open III. If you are using Mac 2011 users just follow the path given below

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Password protect a word document Using Limit Editing Mark as Final option to Password protect a word document

How to password protect a word document using Encrypt Document
