A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
It is my understanding that the Autosave setting can be turned off as default by un-checking the Autosave setting in the 'Save' section of the program Options. However it has to be done for each of the Office programs (Word, Excel, PowerPoint) and for every individual Office installation that you use.
Note that you may still need to unset AutoSave for any document created on a PC that you have not configured to disable it.