When you have an Excel, Word, or PowerPoint file open that has been shared in SharePoint Online or OneDrive, there’s an easy way to see when and who updated the file using the Version History icon in the Ribbon Bar. You can also easily see the actual file in earlier versions. Here’s how…
In this Excel file I have stored in SharePoint Online, I can select the Version History (clock) icon in the ribbon bar. I can also click on Open Version if needed:
In this Word file stored in SharePoint Online, I have the same option:
And this time with a PowerPoint file saved in OneDrive:
One Minute Office Magic 