Fortunately, Excel provides built-in features that allow you to hide and password-protect your worksheets without requiring any programming skills. Password Protecting Excel Spreadsheet Data ...

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.

In Microsoft Excel, each cell is locked automatically. In enabling protection of a spreadsheet, it will often be faster to unlock everything and then re-enable the lock on chosen cells.

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

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

Using Microsoft Excel 2007, you can protect worksheets in order to keep other users from making changes. Unfortunately, this protection applies to everything on the worksheet, including groups.

You can make Excel always open old spreadsheets in Protected View. Enable or disable Protected View using in-built setting, Group Policy, Registry.