Encrypt a Microsoft Word Document
If you have a MS Word that contains sensitive information, you can password protect the document so that it can be safely transmitted via email or stored in a network file share. Be careful to not lose or forget the password as the document cannot be opened without it.
Step-by-step guide
To encrypt and password protect your document, follow these steps in Microsoft Word
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Open the doc you want to protect.
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Choose File > Info > Protect Document.
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Select Encrypt with Password.
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The Encrypt Document dialog box appears; type your password into the text box and repeat when prompted.
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Save your document - it is now encrypted and password-protected.
If you're sending the protected file to someone via email, be sure to provide the password to the recipient through a means that is not email such as a phone call or text message.