Microsoft Excel has been one of the go-to spreadsheet apps for several decades, and it's developed an array of tricks throughout its lifetime, not just for making data entry, editing, and ...

Want to protect an important Word document or Excel spreadsheet? Here's how to add a password, make documents read-only, and tap into other tricks to safeguard sensitive files.

Safeguard your Excel worksheets from accidentally deleting formulas or data sets by locking important cells, while leaving the rest of the worksheet editable.

Excel also allows you to protect the workbook structure. This prevents others from viewing hidden worksheets, as well as adding, moving, deleting, hiding, or renaming worksheets.

To make your cell non-editable in Excel, you have to lock the cell and use a password to protect the information. Learn how!

Microsoft Excel is immensely popular for both professional and personal spreadsheet needs. Here are the steps for unprotecting your worksheet.

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.