Presentation.AutoSaveOn Property (PowerPoint)
True if the edits in the presentation are automatically saved. Read/write Boolean.
expression A variable that represents a Presentation object.
When a new presentation is created, the default value for the AutoSaveOn property is False, the property is disabled, and the user's changes will need to be saved manually. However, if the presentation is hosted on the cloud (that is, OneDrive, OneDrive for Business, or SharePoint Online), then the AutoSaveOn property defaults to True and the edits in the specified presentation are automatically saved. If a cloud-hosted presentation is shared with other users, then their changes will also be automatically merged into the user's local copy when AutoSaveOn is True.
Table 1 AutoSaveOn behavior
This example notifies you whether the presentation is set to be automatically saved or not.
Sub UseAutoSaveOn() MsgBox "This presentation is being saved automatically: " & ActivePresentation.AutoSaveOn End Sub