You can protect a document by using a password to help prevent unauthorized access.
Click
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the File tab.
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Click Info.
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Click Protect Document, and then
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click Encrypt with Password.
In
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the Encrypt Document box, type a password, and then
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click OK.
In
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the Confirm Password box, type the password again, and then
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click OK.
| Info |
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NOTE: |
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When you encrypt a file using Office 2016, the default encryption method is AES-256 NOTE: |
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Never email the password to the file in the same email. Either relay the password over the phone or send it using other means like a text message. Do not email the password to the recipient. NOTE: |
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If you lose or forget a password, Excel cannot recover your data. |
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