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How to password protect your Excel workbooks – Microsoft 365
Require a password to open or modify a workbook
How to Protect a Microsoft Excel File with a Password - wikiHow
5 Quick Ways to Password Protect a Microsoft Excel File
Protect a workbook - Microsoft Support
How to Require a Password to Open an Excel File: A Step-by-Step …
Protect a Workbook in Excel - 6 Methods - ExcelDemy
How to Protect an Excel Workbook: A Step-by-Step Guide
How to Password Protect Excel Workbook, Worksheet and Cells?
Change or remove workbook passwords - Microsoft Support