7-Zip can password protect and encrypt any file you put in a zip folder, regardless of the file extension.
Navigate to the 7-Zip download page.
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Click the correct .exe for your operating system, and save it to your computer.
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Click "Install" then once it's finished, click "Close."
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Find the file you want to encrypt, right click it, navigate to 7-Zip>Add to archive...
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You will be presented with this screen.
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Change the archive format to "zip" to make your zip folder.
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Create a password for the document, re-enter it, then change the encryption method to AES-256, then press "OK."
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A zip folder will then be created in the directory your file was in that is both encrypted and password protected with the password you gave it.
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NOTE: |
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If you lose or forget a password, Excel cannot recover your data. |
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