1. Open a workbook.
2. On the File tab, click Save As.
3. Click Browse.
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4. Click on the Tools button and click General Options.
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5. In the Password to open box, enter a password and click OK.
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6. Reenter the password and click OK.
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Note: this feature also encrypts your Excel file. If you lose or forget the password, it cannot be recovered.
7. Enter a file name and click Save.
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It requires a password to open this Excel file now. The password for the downloadable Excel file is "easy".
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