I know how to protect a worksheet in a macro and also protect a workbook in a macro. But I don't know if it is possible to protect a workbook in windows. Let me explain. When I open up say drive F:\... on my flashcard, I see my workbook which I will call book1.xlsm. I want to be the only person to open up the workbook with a password when I do a file open or a double click. If some else tries to open it up a pop up will emerge saying "Please supply a correct password". Is this doable or not?