At the file level, you can password protect an Excel workbook in two ways: You can determine who can get in and who can save changes.

With the Excel file open select File in the top-left corner of the screen, followed by Info. Select Protect Workbook, then choose Encrypt with Password.

Open the Excel file you want to protect with a password. Click on File -> Info. Now select Protect Workbook. Select Encrypt with Password from the list. Now enter the password. Confirm it once ...

Add passwords if you want Excel to prompt for a password before allowing a user to open or modify the workbook file.

Microsoft Excel lets you embed content from other applications, including PDF files. You can embed a PDF file into a cell of an Excel worksheet and then use Excel's security features to lock the ...

First, you need to open the Excel spreadsheet and enter your password to access the file. Then, go to File > Info and click on the Protect Workbook option.