The feature is turned on by default and the default save interval is 10 minutes. Microsoft Office has a fantastic feature called AutoSave, which is built in to automatically save a temporary PowerPoint copy on a periodic basis. How to Recover Unsaved PowerPoint on Mac (2011/2016/2018) Method 1: Use PowerPoint AutoSave on Mac if Enabled Just follow below ways, you will recover unsaved PowerPoint on Mac and get your lost or deleted PPT file back. To avoid the PowerPoint file from being overwritten, please do not add new data or install Mac Data Recovery software on the hard drive where you lost PowerPoint presentation.
