If you wish to edit or make changes to the Excel file, you can disable or remove Read-only attribute by following any one of these methods.

You can have Excel make a spreadsheet in read only format for others, so that people can read its contents but not edit them, or you can enforce other content restrictions.

How to Disable Read-Only in Excel. Although most Excel documents are saved so that they can be edited by anyone who opens the document, others may be saved as "read-only" so that they cannot be ...