Excel 2013 Formulas Not Working
But calculation operations can be resource intensive, particularly when working with large spreadsheets, so some Excel users will elect to switch their spreadsheets to manual calculation. This is fine when you are the one creating the spreadsheet, and know that you will need to manually calculate your formulas when you are done making changes to your data. But spreadsheets get shared with others, who might not be aware that those spreadsheets need a little more interaction....