How to protect excel sheet

How can we protect Excel sheet?

How to lock all the cells in an Excel worksheet
  1. Navigate to the Review tab.
  2. Click Protect Sheet. In the Protect Sheet window, enter a password that’s required to unprotect the sheet (optional) and any of the actions you want to allow users.
  3. Click OK to protect the sheet.

How do I protect an Excel spreadsheet without editing?

Go to File > Info > Protect > Unprotect Sheet, or from the Review tab > Changes > Unprotect Sheet.

How do you protect Excel cells from editing?

Press the Keyboard Shortcut Ctrl + A to select all the cells of the sheet. Right click and choose Format cells. Go to the Protection tab and uncheck Locked option and click Ok. Now select only the cells or columns, rows that you want to protect.