To prevent other users from accidentally or deliberately changing, moving, or deleting data in a worksheet, you can lock the cells on your Excel worksheet and then protect the sheet with a …

To lock your file so that other users can't open it, see Protect an Excel file. To protect certain areas of the data in your worksheet from other users, you have to protect your worksheet.

You can lock only specific cells and ranges before you protect the worksheet and, optionally, enable specific users to edit only in specific ranges of a protected sheet.

How to protect an Excel file using a password to prevent unwanted access to your data.

To control how users should work within an individual worksheet, use worksheet-level protection. Let’s say each worksheet in your status report workbook contains data that is common to all …

Open the sheet or workbook that you want to protect. On the Review tab, click Protect Sheet or Protect Workbook. In the Password box, type a password, and in the Verify box, type the …

You can use formatting and editing restrictions to prevent content reviewers from accidentally changing an Excel spreadsheet.

On the Review tab in the ribbon, in the Changes group, select either Protect Sheet or Protect Workbook, and then reapply protection. See Protect a worksheet or Protect a workbook.

To add a new password, click Protect Sheet or Protect Workbook, type and confirm the new password, and then click OK. To remove a password from the workbook, click Protect …

To prevent users from changing the protections on the cells and controls that you have set, protect both the worksheet and the workbook. For more information, see Protect a workbook.