I did a google search trying to resolve a problem that I had formatting cells in an excel document that pointed me to this site. I did not find a solution, so I thought I would post this tip after I eventually resolved this myself. If you click on a cell in an excel document that is locked you will not be able to format it. You must copy all the data from the locked document to your clipboard, you must then close the document, open a new document and paste the data. Once this is done you should have all your formatting options.