There are many reasons you might want to protect an Excel worksheet with Read-only mode. Maybe you don't want someone to erase data from a workbook accidentally, or you want to make sure a file is ...

You may have gotten an Excel file from someone, but you’re not able to edit it due to a strange Read-only notification. There are several ways to get around this problem, and like always, we are ...

If the file opens in read-only mode, you may still make changes and use the "Save As" command to save the file to a new name. Save the file in the Excel 2003 or 2007 format, but with a different name.

Step 3: Next, click the Protect workbook button. From the drop-down menu, select Encrypt with password.. Step 4: Excel will then prompt you to type in a password. Pick one that’s complicated and ...