Open the workbook in Excel
Go to the Review tab
Click Unprotect Workbook
Enter the password if prompted
Save the workbook
If the workbook is protected at the sheet level, go to Review and click Unprotect Sheet
Enter the password if prompted
If the file is opened in Protected View, click Enable Editing first
If you do not know the password, contact the workbook owner or administrator
If the workbook is protected by file permissions, adjust the access rights in the file location or sharing settings