Flash fill breaks a lot of things in older excel documents. It causes maddeningly slow transfers from cell to cell after updating. I am trying to find a way to turn off "flash fill" in Excel 2013 automatically before rolling the product out to the rest of the staff in my company. Is there (preferably) a registry key that I can apply or a switch that I can include during the install that will turn this option off? Here is an image of the setting that I am looking to turn off: I haven't been able to find any documentation online about turning this off, other than this one page from MS: http://office.microsoft.com/en-ie/excel-help/turn-flash-fill-on-HA104043292.aspx