Open the Excel file
Go to the Review tab
Click Unprotect Sheet
Enter the password if prompted
Click OK
If the workbook is protected, go to the Review tab
Click Protect Workbook
Enter the password if prompted
Click OK
Save the file
Open the Excel file
Go to the Review tab
Click Unprotect Sheet
Enter the password if prompted
Click OK
If the workbook is protected, go to the Review tab
Click Protect Workbook
Enter the password if prompted
Click OK
Save the file