Locking cells in a Microsoft Excel spreadsheet is a super useful thing to know how to do. It’s used to protect a certain segment or an entire worksheet from being modified by anyone other than ...

Locking a cell in Excel will make it so viewers can't change the data inside of that cell, which is useful if you're sharing a spreadsheet with precise data.

Open the spreadsheet you want to protect in Excel, click the "Review" tab and then click "Protect Sheet" in the Changes group to display the Protect Sheet dialog.

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.

You can stop or prevent users from editing directly in cells in Excel. You have to lock and protect Cells in Excel by following these steps.

You can embed a PDF file into a cell of an Excel worksheet and then use Excel's security features to lock the object. This allows you to take advantage of both technologies.

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.

You worked hard to put that Excel sheet together, now protect it from unintended damage.