Autosave is a sharepoint, not office feature. If you are saving local there is no autosave.
Thanks,everyone,for the information. I’ll make it a point to save local regularly
https://support.office.com/en-us/article/What-is-AutoSave-6d6bd723-ebfd-4e40-b5f6-ae6e8088f7a5
AutoSave is a new feature available in Excel, Word, and PowerPoint for Office 365 subscribers that saves your file automatically, every few seconds, as you work.
AutoSave is enabled by default in Office 365 when a file is stored on OneDrive, OneDrive for Business, or SharePoint
Important: Do you use File > Save As after making changes to an original document or template? If so, we recommend using File > Save a Copy before making your changes. That way AutoSave won’t overwrite the original file with the changes. If AutoSave did overwrite the file with your changes, see the section below, “I didn’t want my changes saved, how do I go back?”Online.
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