I need to save an Excel 2010 file to open with a password prompt for editing. If no password is entered, the user will only have the file opened as Read Only. I have looked at all the various options of protection in Excel 2010, and I am not seeing a solution.This was a piece of cake in earlier versions of Excel. need to save an Excel 2010 file to open with a password prompt for editing. If no password is entered, the user will only have the file opened as Read Only. I have looked at all the various options of protection in Excel 2010, and I am not seeing a solution.